C :: Reading String And Checking If Integer

Nov 23, 2013

wrote this program to check if a string is an integer. It checks for + or - sign at the front of it, but it spat out some errors.I think I broke it.Here is the code:

Code:

#include<stdio.h>
#include<ctype.h>
#include<stdlib.h>
int getInteger(char*);
int main(void) {
char str[99];
int x;
}

[code].....

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C++ :: Checking To See If Integer Is A Character

Feb 14, 2014

#include <iostream>
using namespace std;
int main(){
int x;
cout << "Enter character:";
cin >> x;

[Code] ....

If i type in:
+
How come it says that "this is not addition?

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C/C++ :: Data Type Checking For Integer

Jan 22, 2014

Ok so I have this simple program that gets input from a user. I just want to put in a line of code to make sure that hte user can't type in something like "pizza" , I want to make it say that if the user puts in something that is NOT a number they will get a error back saying "Wrong! try again!" Here is my code :

#include <iostream>
using namespace std;
//Summation Program
//Function Prototypes
int get_num();
void compute_sum(int num, int &sum);

[Code] ....

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C/C++ :: Reading Lines Of Numbers / Characters While Checking For EOF?

Aug 30, 2014

Simple program to convert files to XML files. However I am trying to narrow down why my code is not working. I am reading a line that looks like "2001 Joe Dirt Los Angeles", then the next few lines are followed by text and the the fifth line looks like "---End of Description---".

So here is the file

2001 Joe Dirt Los Angeles
Home is where you make it
Best movie ever(but not really)
But seriously
---End of Description---

Here is example code to test the process

string line;
while(dataFile >> line) {
getline(dataFile, line);
cout << line << endl;
}

My returning output is

[space]Joe Dirt Los Angeles
[space]Home is where you make it
[space]Best movie ever(but not really)
[space]But seriously

My test code is skipping the date on the first line but replacing it with a space. Then it is skipping my fifth line which reads "---End of Description---". Now if I take the code out of the while loop and hard code in five lines of output (x5 getline(dataFile,line); cout << line << endl;) then my code works as expected. I get all of the information. Date and the fifth line.

It looks like when I am testing for the EOF it is also taking in the numeric value at the beginning of the first line. However, that does not explain why it is dropping that fifth line.

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C :: Checking Whether A String Is Palindrome Or Not

Nov 4, 2013

Everything seems to be correct from my perspective. heres the program: Code: /*c program to check whether a string is palindrome or not*/

#include<stdio.h>
#include<string.h>

int main(void) {
char str[30];
int i,j,flag=0;

[Code] .....

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C/C++ :: Converting 8-byte Integer To String Based Integer

Oct 15, 2014

Complete the function myitohex so that its converts 8-byte integer to string based hexadecimals.

Ex: printf("0x%s",myitohex(64,hex)); should printout "0x40" on the screen
char *myitohex(uint8_t i, char *result){
???
return result;
}

I wrote:

#include <stdio.h>
#include <stdint.h>
char *myitohex(uint8_t i, char *result){
*result = i + '0';

[Code] ....

0xp gets printed out which is wrong. I think *result = i + '0'; is wrong. What changes should i do on this row ?

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C :: Reading Integer From Stdin

Mar 26, 2014

I am aiming to read an integer from stdin(pointed to the uart) and echo it with the uart interrupt service routine. there is a simple retarget file along with the main code shown below. So far i can read chars (char x[32] but i am struggling with int.

I have gathered that i need to use the scanf function to read an int from the pointer defined in fgets.

My output is giving me weird values, i enter 8 and ill get a random 3 digits back. I have a feeling its a problem with the input buffer.

Code:
//------------------------------------------------------------------------------// Cortex-M0//------------------------------------------------------------------------------
#include <stdio.h>#include <time.h>#include <rt_misc.h>
#include <stdlib.h>#define AHB_LED_BASE
0x50000000#define AHB_UART_BASE
0x51000000void UART_ISR(){

[Code] .....

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C++ :: Reading Bits Using Bitwise Operators From 32 Bit Integer

Jun 1, 2012

I have a 32 bit integer variable with some value (eg: 4545) in it, now I want to read first 8 bits into uint8_t and second 8 bits into another uint8_t and so on till the last 8 bits.

I am thinking of using bitwise operators...

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C++ :: Writing Integer Array To File In Binary Form And Reading It

May 30, 2013

Both arrays arr and pointers are the same size. I am having problems reading pointers from file into a new int array.

FILE* ky_pt=fopen("stashedclient","ab");
write(fileno(ky_pt), pointers, sizeof(pointers) );
pointerindex=lseek(fileno(ky_pt), 0, SEEK_CUR );
printf("pointerindex after writing array %d

[Code] .......

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C++ :: Input Integer To A String?

Oct 20, 2014

i wanna put an integer into a string for example:

Code:
string name;
int num=8;
name= "George"
//

I want in the end of George to pas the num variable i ve seen some examples but ive not yet come up with a solution like str.insert();

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C++ :: Converting String Into Integer?

Nov 22, 2013

I'm trying to convert a string into a integer and when I call stoi(line) it causes the program to crash.

int main() {
vector<int> numbers;
int i;
string line;
ifstream myfile ("example.dat");

[Code] ....

The file being read from looks like:

3
12
23
34
12 34
12 12
34 23
23 23

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C++ :: Read Integer To A String?

Oct 15, 2013

How do I read integers to a string and store then into a vector array?

I need to add two input digits i.e. "1234567878887777" and "123344543543543"

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C/C++ :: Convert String To Integer (hh/mm/ss)

Jul 9, 2014

I need to convert below value char *time="00.00.05".

I need to convert this to hh/mm/ss ....

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C/C++ :: Converting String Into Integer

Sep 26, 2013

struct time
{ int t;
    int h,m,s;    
};  
int main() {
    time t;
    int totalsecond;
    char A[10],B[10];

[Code] ....

It gives error at line no 12.

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C++ :: String Integer Value - Input / Output

Aug 14, 2013

Code:
Prompt the user to input a string,
and then output the sum of all the digits in the string.

Sample Run 1:
Input -> A111B222C
output -> 9

Sample Run 2:
Input -> ABC123XYZ32100000005555555555zzzzzz
output -> 62

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C :: Assign Pointer Of A String To Integer

Mar 22, 2014

I have this code:

Code:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
[code]....

What I want is basically to assign to the *p the pointer of the string so that i could do the following printf(" print string %s",*p); so i dont know how to do that.

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C :: How To Convert Part Of String And Integer

Jan 2, 2014

I'm having a problem converting part of a string to an integer.I used strtok to seperate my string and I have also a function for atoi but how to apply it to my strtok function.What i need is to change the char *years to an int.Have a look of what I got:

Code:
int main() {
char sentence[]="trade_#_2009_#_invest_#_DEALING";
char *word=strtok(sentence, "_#_");
char *year=strtok(NULL, "_#_");; // assigning NULL for previousely where it left off
char *definition=strtok(NULL,"_#_");
char *synonyms=strtok(NULL,"_#_");

[code]...

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C++ :: Convert From Integer To Character String

Oct 2, 2013

I have been trying to write a function which can convert a number from an unsigned long integer to a readable ASCII character string. this is what I have come up with, but I am receiving some very strange characters in return. Could the problem be that I am telling a char to = an unsigned long int, (cString[i] = product[i])?

void convertToString(unsigned long con) {
unsigned long product[10];
char cString[10];
const unsigned long begConvert = 10 ^ 10;

[Code] ....

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C++ :: Converting String To Integer Array

Apr 17, 2014

For Example, it the entered string is: 0324152397 I want it to get stored in an array like-[0] [3] ...[7]. Secondly the string entered may be of any length that is defined only at run time. So, I also need to calculate string length. How could I do that.

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C++ :: How To Turn String Integer Into Array

Jul 23, 2013

int main () {
string integer1;
string integer2;
cout <<" enter your first number: " << endl;
cin >> integer1;
cout << endl;
cout << integer1 << " is your first number" << endl;
}

Now how do I turn the string integer into an array?

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C++ :: Adding String But It Return Some Integer Value

Jun 10, 2013

string str = "sfsdfsd"

and i want to add like str[3]+str[4]

but it return some integer value

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C :: Assign Length Of String To Integer Variable

Dec 25, 2014

What I'm trying to do is to assign the length of a string to an integer variable. This is what i tried, it did not work.

Code:
printf("Enter a string
");
fgets(test_pass, 30, stdin);
strcpy(x,(strlen(test_pass)));
printf("%d", x);

This was just a test, and it did not compile. How to do this?

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C :: Convert String Made Of Many Numbers To Integer

Jan 6, 2015

I am supposed to convert a string made of many numbers between every number spaces are between, to an integer variable for every number..

How am I supposed to get over this problem?

Example: String: " 322 52 231"

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C :: Convert Elements Of String Array To Integer

Feb 4, 2014

I'm just learning and C. Here is a code snippit from a program that will compile. It's function is to validate credit card numbers. I have an error I can't find though. the last print statement shows the conversion in reverse string (as integers). Here is the code:

int main (void)
{
char cn[17];
char *cardtype;
int n0,n1,n2,n3,n4,n5,n6,n7,n8,n9,n10,n11,n12,n13,n14, n15;
int s1,s2,s3,s4,s5,s6,s7,s8;
int oddsum;
int sum;
int total;
int validate;
}

[code]....

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C++ :: Converting Integer To String Based On Digits

Apr 23, 2013

I want to convert the integer into a string.

int x = 693;
char chararr[max];

In my homework, x is unknown. but don't worry, I wont ask for the full code. I just need the part where you change the int into a string/array of char.

I'm thinking in circles from where to start?

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C++ :: Function That Accepts Integer And Returns A String?

May 5, 2014

How to go about making a function that accepts an integer and returns a string with any one of 5 strings containing the name of the object. For example object number 3 might be "Pen". Object 4 might be "Paper".

To do this would I just use an array?

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