C/C++ :: Integer And Float Value?

Feb 28, 2014

this is my code

#include<stdio.h>
main()
{

[Code]....

N=1st number M=2nd number(accrding to my prof we will name it N and M
ctr= increment of factorial of N, ctr2= increment of factorial of (N-M)

the problem is when i got the factorial of N / factorial of (N-M) i need to get the last non zero digit. so i use mod if it has zero in it. but mod can be only used with an int value. and when i change it to int value, the value of fact1 which is a float change

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C :: Round Off Float To Integer

Mar 10, 2013

I have a float values I'd like to round off to the nearest integer value.

That is to say, if the float value is 44.234533, the integer value should be 44. If the float value is 44.682101, the integer value should be 45.

How do I do this?

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C :: Float / Integer Conversion

Oct 14, 2013

why does the following code output "0.000000" instead of "1.000000"?

Code:

#include <stdio.h>
int main(void) {
int x=3, y=2;
printf("3/2 is %f
", x/y);
return 0;
}

the code was compiled and run using gcc 4.4.7 and glibc 2.17 on linux kernal 2.6.32 running on a PC with an intel i5-2500k cpu(sandy bridge)

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C/C++ :: Dividing Number By Float Integer?

May 5, 2014

I need to read a float number and show the rest of his division by an integer, but i'm having the following error message:

Quote

error: invalid operands of types 'float' and 'int' to binary 'operator%'

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C/C++ :: Input Float And Integer And Save It To Txt File

Mar 20, 2014

i am writing a program that requires me to write am input a float and an integer and save it to a txt file. When i try to compile my code i get an error "assignment from incompatible data type". ?

int *intconstant;
float *floatconstant;
int *value;
struct FILE *infileptr, *outfileptr;
infileptr = fopen("/home/brinkmann.brendon/assign14data.txt", "r");
outfileptr = fopen("/home/brinkmann.brendon/assign14report.txt", "w");

[Code]...

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C/C++ :: How To Split A String Into Various Types (integer / Float / Char)

Nov 28, 2012

I'm reading lines from a text file in C++ which contains integer + string + float number(like 3,67 with comma) + string in this order. I need the float number to sort the lines but I couldn't manage to separate the data into the types I can use so far. I tried different kind of functions and the best I could do was such a code;

void main (){
     ifstream records;
     records.open("records.txt");
    int id;
    string line;
    char name[100];
    float gpa;

[Code] ....

This fails at reading the floating number which has comma in it and then last string is read as string starting with the comma and rest of the number. An output example is:

698 John 3 ,67

It doesn't read last string on the line as well. I understand that part but simply I need another read but what I want exactly is to separate one line using "tab" as a seperator into proper data types and then using the numbers as integers, and the grades as floating numbers. How Can I do this?

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C++ :: Turning A Limited Float Into Another Float?

Nov 20, 2013

I can do the folowing:

float var1 ;
var1 = 9.12345 ;
printf("%.2f",var1) ;

the output will be 9.12. What if I wanted to save that as another separate float with displaying it on screen?

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C/C++ :: Cannot Convert Float To Float Assignment

Jun 8, 2014

#include <iostream>
#include <string.h>
#include <sstream>

[Code]....

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C :: Assign Integer Value To Unsigned Char Array But It Is Not Storing Integer Values

Oct 25, 2013

I am trying to assign the integer value to unsigned char array. But it is not storing the integer values. It prints the ascii values. Here the code snippet

Code: uchar uc[100];
for(i=0;i<100;i++)
{
uc[i] = i;
}

The values which are stored in uc[] is ascii values.I need the integer values to be stored in uc[]. I tried to do it with sprintf. but the output is not as expected. if I print the uc[i] it should diplay the value as 0,1,2....99.

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C++ :: Changing Integer Into New Integer With Simple Mathematical Operations?

Jun 15, 2014

changing a 9 digit integer into a new 9 digit integer through simple mathematical operations. For example, I need to change 123456789 into the new digit 456123789. Sometimes I need to change a 9 digit integer into an 8 digit integer. An example is 789062456 into 62789456. I can ONLY use simple mathematical operations (addition, subtraction, multiplication, division and modulo).

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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++ :: How To Covert Int To Float

Oct 12, 2013

I have a question here

How I want to convert an int to float in the middle of the program

#include <iostream>
using namespace std;
int main()
{
int x;
float y;
cin>> x;
y= (float)x;
cout<< y;
}

is this line correct y= (float)x;?

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C++ :: Determining If A Float Is Odd / Even

Oct 22, 2013

determining if a value entered in loop is an odd or even number. Also, the value can't be int because it may be a decimal value(therefore i cant use the if(x%==0).

I need to replace the if(value%2 ==0) else num_even++ statement in my code with something else that will work with float to determine odd vs even.

#include <iostream>
using namespace std;
int main() {
int num_values;
float sum_values = 0;
int num_neg_values = 0;
int num_pos_values = 0;

[code]....

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C++ :: 32 / 64 / 80 Bit Float Conversion?

Feb 14, 2012

I am looking for a math/big num library, that allows me to convert 32/64/80 bot float numbers to string and vice versa.

Precision & accuracy is of importance here, and since this is an IEEE standard, i have high hopes that there are libraries for this out there, which would save me the hassle of trying to implement this myself...

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C :: Can't Show The Proper Float Value

Jul 7, 2014

I am working from my "ansi c" book by steven lawlor, page 73 program 2. write a program that accepts two numbers from the keyboard and prints the following information.

variables
first
second
execution
First number ? 7
Second number ? 2
the second goes into the first 3 times
with a remainder of 1.
the quotient is 3.5.

Code:
#include <stdio.h>
main() {
int first, second;
scanf(" %1i %1i", &first, &second);
printf("First number ? %1i

[Code] ....

//I included this as I had some error message come up
// before, not sure if this is correct though?
} it shows what is expected but I cant get the 3.5.

I have tried %f and variations of width/precision but still not luck. Also, when I click on the application and put in the variables I press enter, the program executes and disappears so I cant see the result. how do I get the program to stay up until I want to get rid of it?

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C :: Float Showing Nothing In Printf

Oct 6, 2014

I just checking but confused with float. in that code same size int, and same type double are working but float showing nothing in printf..why?? i'm using GCC compiler int 32bit win7 os

Code:
#‎include <stdio.h>
int main() {
char arr[10] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };
printf("Size of char=%c
", ((char *) (&arr[0]))[1]);

[Code] ....

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C :: How To Find First Bad Number From Float

Mar 6, 2015

I am entering numbers to float ... I want program to find out, which first number is not from specific interval. How to do it ? Example: Enter input : 5 10 20 30 50 46 . 30 is invalid. Here is the code :

Code:

while(scanf("%f",&input)!=EOF || input==0) {
sum=input+sum;
if (getchar() == '

[Code]....

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C :: Float Variables Not Able To Be Multiplied With Each Other

Apr 5, 2013

why does the 2 variables, loanAmt and intRatem not work when they are multiplied together. The question is " Write a program that calculates the remaining balance on a loan after the first, second and third monthly payments. "

Code:

#include <stdio.h>
void a5()
{
float loanAmt, intRate, intRatem, dintRate, payment, pay1, pay2, pay3,test;
printf("Enter amount of loan:");
scanf("%f", &loanAmt);
}

[code].....

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C :: Filling Float Array

Oct 6, 2013

What am I doing wrong here.

Code:

#include <stdio.h>
#define N 25
int main () {
int s,min,sec,total,mins;
float speed,splits[N];

[Code] ....

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C :: What Is Correct Way To Print A Float

Feb 17, 2013

I have a program that printf a float that is returned by a function like this:

Code:

printf("%3.1f
", myfloat());
...
float myfloat(void) {
code....
}

In w32 my program has been running ok, but when run in a w64, it crash at the printf. If I change the definition of the function to return double it runs ok. in printf format string - Wikipedia, the free encyclopedia , in the "type" section I see there is no definition to print a float, but %f is for double in fixed point.So the question is what is the correct way to printf a float? must I cast? or is it better to return double? if so, does it have a performance penalty?

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C++ :: Float As Template Parameter

Jan 16, 2014

Unless I'm missing something, it's now possible(ish)? A little concept is below, very rough around the edges. Still though, if this is valid by standard C++, why can't we have built-in support for float / double template parameters?

#include <iostream>
#include <tuple>
template<int Numerator, int Denominator>
struct Float {
constexpr static float value()

[Code] ....

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C++ :: Writing Float Value To File

Oct 11, 2014

I'm trying to write the value of xcord to the file, but it's come out as jiberish like š™ for some reason.

#include <iostream>
#include <Windows.h>
using namespace std;

[code]....

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C++ :: Float Function Of Percentage

May 28, 2013

Below is the code of a program using classes and functions ,, my float function doesn't show answer in fractions ,, show something else...

#include <iostream>
using namespace std;
class khan{
public:
void print(){
cout<<"welcome to the online Addition System!!!" <<"

[Code] ...

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C++ :: Converting String Value Into Float

Feb 21, 2015

In my project i have to take the string valve and convert it into float

For example
100 will be 100.00
100.0012 will be invalid
100.00 will stay as it is
99 will be 99.00

I am thinking of using stof but i m stuck on how to set the precision of 2 ....

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C++ :: Convert Value To Clamped 0.0 - 1.0 Float

Feb 26, 2013

What would be a reliable way to do this? I need to convert RGB components to float values between 0.0 and 1.0 so 0 is 0.0 and 255 is 1.0.