C++ :: Output Vowel From User Input - Error With Strings And Functions
Nov 25, 2014
The program is supposed to read in a string from the user and then output the number of each vowel that the string has. My first function is initializing the vectors, and the one that I'm having trouble with is the function used to read the string from the user and save it.
Here's my code:
#include <cstdlib>
#include <iostream>
#include <iomanip>
#include <string>
#include <vector>
using namespace std;
// FUNCTION PROTOTYPES GO HERE:
void init_vectors(vector<char> & vowels, vector<int> & frequencies);
string read_text(const string & prompt);
[Code] ....
And I'm getting the error:
freq.cpp: In function ‘std::string read_text(const std::string&)’:
freq.cpp:74: error: no matching function for call to ‘getline(std::istream&, const std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)’
I'm not too sure if I can't use the function getline here or if there is something wrong with the function prototype itself but I'm pretty sure there isn't an error there as it was given to me.
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Oct 18, 2014
My assignment is : Please use C type strings ( array representation of strings). Write a program that will ask the user to enter a string. It will then regard that string as a worked-on string and allow the user to perform the following editing functions on it:
s – search
i – insert
a – append
d – delete
a – append
d – delete
r – replace
e – exit
s – search
This option will allow the user to search for a specified string in the worked-on string. If the string is
found, it will display the starting index (position) of the searched string in the worked-on string.
here is what i have so far.
#include <iostream>
#include <cstring>
using namespace std;
int main() {
char a_string[80];
[Code] .....
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Jan 10, 2014
How to do this?
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Sep 9, 2014
I'm trying to write a program that takes input from the user (thats a char) and outputs it to the monitor in hex form.The program is meant to continuously take input from the user then output to the monitor in hex form until an EOF is detected this triggers the program to close.The following code does this except that I get a lower case 'a' at the end of each output.I think the 'a' has to do with the enter key and if that is the case how can i tell the program to ignore this input from the user.
Example: input from user: ABC output to monitor: 41 42 43 a
Code:
#include <stdio.h>
int main(void) {
char myChar;
while(EOF != (myChar = getchar())) {
printf("%x ",myChar);
}
system("pause");
return 0;
}
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Apr 22, 2014
I am writing a code in a class that will change the user input which is integer to a string. For example if the user enter 13347..the output should change to "one three three four seven" on the user screen.I'm not getting the right output.
Code below:
#include <iostream>
#include <string>
using namespace std;
string arr[]={"one","two","three","four","five","six","seven","eight","nine"};
class convertTo{
public:
int signed num;
int convet(){
cout<<"Enter a number to convert to string "; cin>>num;
[code]....
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Mar 11, 2014
The problem that I am having is that , the program outputs numbers that are perfect numbers and im not sure where i can add a statement to make it so that if it isn't a perfect number it doesn't output...
#include<iostream>// allows user input/output
#include<conio.h>
#include<fstream>//data file / result file
#include<iomanip>
#include<cmath> // math function
#define in_file "data.txt"
#define out_file "result.txt"
[Code] ....
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Jan 14, 2015
So I'm supposed to write something that will output a multiplication table from two user input integers between 2 and 10.
For example it should display like this is the user inputs 4 and 5
1 2 3 4 5
2 4 6 8 10
3 6 9 12 15
4 8 12 16 20
I was hinted to used two for loops and this is what I have thus far, what I can't figure out is how to display it like the example.
#include <iostream>
using namespace std;
int main() {
int num1;
int num2;
cout << "Enter two numbers between 2 and 10." << endl;
[Code] .....
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Oct 22, 2012
I am attempting to write a simple C program, in which the user is asked to input their name and height in inches and the output is the user's height in centimeters.
I have attached my program and what happens when I try to run it.
Attached Images : PM.jpg (120.6 KB)
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Nov 24, 2014
I have trouble printing out the movies starting with inputing only two letters.
#include <iostream> //cout, cin, endl,getline
#include <fstream> //ifstream
#include <cstdlib> // exit
using namespace std;
const int NUM_MOVIES = 116792;
struct Movie {
[Code] ....
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Oct 21, 2012
Write a C++ program that does the following:
Prompt the user to enter a day of the week as M (or m), T, W, R, F, S, and U for Monday through Sunday respectively. The user may enter an upper or lower case letter.
When the user enters a character, the program will echo the letter and output the name of the day of the week.
Provide an error trap that reads something like "you have entered an invalid letter; program aborting." Suggestion: use a switch statement with the error trap as the default condition. it is not necessary to prompt for multiple inputs.
So I know how to get the program to echo back the letter and everything. What I am a little confused about is: will I have to define all the letters as their respective day? eg. make M== Monday. And if I do have to do that how would I get it to accept Upper and Lower case letters and recognize that that letter is == monday ect. ect.
Also my main problem is the switch statement as the error trap. I have never used the switch statement, but I know what they do. I just don't really understand how I would use it for an error trap. Am I suppose to just make a case for every other letter in the alphabet other then M T W R F S and U? Even if I do that then what if the user enters a number instead of a letter?
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Sep 24, 2014
The purpose of this program is to unscramble the user's input. for example if the user entered 'ftooabll' the program would print 'football'. find the error that I am making....
Now, this only works for strings that are contained in the file wordlist. That being said, I would like this to repeat this search multiple times. Currently, the process is being repeated 7 times, but it only works on the first iteration. The code and sample input/output is below.
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define NUMLOOP 6
void sort_string(char*);
[Code] ....
Sample input/output: (note: all data has been verified to be in the wordlist)
Enter string:
4132dcba
abcd1234
Enter string:
4132dcba
Enter string:
4132dcba
Enter string:
4132dcba
Enter string:
4132dcba
Enter string:
4132dcba
Enter string:
4132dcba
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Jun 9, 2014
How do I error check if the user is inputting letters and not numbers? For example, if the user inputs "Lab.txt" I need to display an error message. If they input "Lab2part2.txt" then this is correct and what I want.
I've found a lot of information online on how to error check for numbers or a single letter (EX: 1,2,3, etc. or 'A' 'B' 'C') but nothing for actual WORDS or maybe I should refer to it as a string of characters?
Is there any way to do this? Because my program requires I ask the user to input the name of the file. But the way my code is currently set up is even when the user inputs the wrong file name it still opens the file. I want to prevent this from happening so my thought was to error check user input.
/*Program to determine company's weekly payroll*/
#include <iostream>
#include <string>
#include <fstream>
using namespace std;
void OpenTheFile() {
ifstream inputFile;
string filename;
char letter;
int number;
[Code] .....
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Sep 15, 2014
I am trying to code a program that takes in user inputted data about percentages and using it to later on calculate a final grade. 4 percents are inputted, for Assignments, Midterm1, Midterm2, and Finals. If the percents dont add up to 1 (i tell the user to enter the decimal value) I set up and if statement to catch it and end the program. Except that if i type in
Assignments = .3
Midterm1 = .3
Midterm2 = .3
Finals = .1
the program doesn't recognize that they add up to 1. Heres the relevant portion of my code [URL] ....
Here's some examples of how it works [URL] ....
And heres what i dont understand [URL] ....
Why is it saying .3 + .3 + .3 + .1 != 1 when .1 + .3 + .3 + .3 == 1?
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May 1, 2014
How to do the problem below using loop?
Input numbers until the user types a 0, then output the product of the non 0 numbers: e
E.g., if the user types 2 4 6 0, the program should output 48
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Feb 5, 2013
How do you use a for loop to iterate through strings to display them in a console?
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Nov 5, 2013
I have to write a program in C++, without using a selection sort, that outputs the name you enter with the lowest age. You input 5 names with ages and at the end it outputs the youngest person. This is what I have so far:
#include <iostream>
#include <vector>
#include <string>
using namespace std;
int main()
[code]......
I Know for the second for loop there has to be if statements in it but I am so stuck on what to write next.
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Feb 8, 2014
I have an array of strings and a two dimensional array made up of floats. In the output for the strings (this array stores 10 divers numbers) I am getting only 8 of the numbers, then a core dump. What could cause this?
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Feb 24, 2015
The requirement was to set the txt files information equal to a variable before and not to put it directly into the array.
#include <iostream>
#include <string>
#include <fstream>
#include <sstream>
using namespace std;
const int MAX = 24;
struct applicant_info {
[Code] .....
the txt doc looks something like this: file name: jobs4.txt
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Apr 22, 2013
From the console of VCE I have run dumpbin export as
Code: dumpbin /export myDLL.dll
in order to see which functions is the dll providing. I got as an output:
Code: ordinal hint RVA name
1 0 00024B0 _Function1@4
2 1 00024E0 _Function2@0
.....
I think RVA means Relative Virtual Address, but what does the @4 or the @0 (or @16) means?
BTW the @# notation is a c-style function naming convention where the number is the size of the parameters accepted by the function. 4 might be an integer or a pointer on a 32-bit system.
If this is the case, I am guessing a @12 might mean three integers and @16 four integers?
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Nov 1, 2014
I am making program that allows the user to determine how big the array size will be and then asks the user to make up numbers to fill the array. Every time run the program on Dev C++ it says "program has stopped working"
Heres My Code:
//Assignment 19 Program 2
#include <iostream>
using namespace std;
int main()
[Code].....
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Oct 6, 2014
how I can ignore strings from being entered by the user. When the use enter's a string it always evaluates it as even. I though I might use a cin.ignore(); but I am unaware of how to use it.
#include <iostream>
using namespace std;
int main() {
cout << "Enter a number: ";
int num = 0;
[Code] ....
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Aug 7, 2013
I'm working with inheritance and pure virtual functions, and I want to overload an output stream operator. However, every time I run the program I get this: 0x7fff00ee98c0.
I'll include a base class and a derived class so you can see what I'm talking about.
Base:
#include <iostream>
using namespace std;
#ifndef _Insurance_h_
#define _Insurance_h_
[Code]....
The application is something like this (I'm assuming the user has already inputted the name, salesperson, make, model, etc):
#include "Auto.h"
#include <iostream>
using namespace std;
#include <vector>
vector<Insurance *> sales;
[Code] .....
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Apr 15, 2014
I am having a problem with my "void Validation :: getId()" function its suppose to get the id number from the user but when I try and type a letter to see if it catches it, it goes into this continuous loop. Also with my "string Validation :: getName(string name)" function it suppose to catch the comma in the user input for their last name , first name but doesn't catch it and still returns the name back to main function.
#include "InputValidation.h"
#include <iostream>
using namespace std;
Validation :: Validation() {
name = " ";
id = 0;
[Code] ....
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Feb 19, 2014
I was very much confused with managing the 3d arrays. Other than initialising it is tough for me to input the data into the 3d array at runtime. I have tried the every possible method i know untill now but i can't successfully input and output the data.
I have written a code by declaring the 3d array of char s[5][2][20] in main and passing it's base address into another function, lets say input(char (*p)[2][20],int ,int ,int). I have passed the 3 dimensions in declaration 5,2,20 to the input function i have used these 3 values as the subscript for the pointer p and tried to input the data. But i wasn't successful.
How to input the strings into the 3d array.
My preferences were:
1.The change of subscript value should take place in loop(eg:for).
2.Which indexes should be used for inputing the data through pointer.
3.Use either "scanf" or "gets" function to inputs the data and print using "printf" or puts.
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Mar 5, 2014
I'm trying to write a program that uses a loop to remove vowels from words. I'm really bad at this programming thing, I am getting an error code "[Error] expected unqualified-id before '{' token" when compiling, so there's no telling at this point if the code will even work. But, I need to get rid of that blasted error.
Here's my code:
1 #include <iostream>
2 #include <string>
3 #include <vector>
[Code]......
how to take an image to post in the forums. So I had to copy/paste/edit to fit :/.
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Oct 7, 2014
I am remaking this code for my gain, and it seems that I cant debug the error..
Are there any comments on the structure of the code? Why are there errors in calling the functions?
#include <iostream>
#include <cmath>
#include <iomanip>
[Code].....
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