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C String to Int
Posted on: February 5, 2009 at 12:00 AM

In this section, you will learn how to convert a string represented value into an integer represented value in C.

C String to Int

In this section, you will learn how to convert a string represented value into an integer represented value in C. You can see in the given example that we have used the library function atoi() provided by the header file <stdlib.h>, to convert the string value of digits ("100") into int value. The number may consist of an optional sign and a string of digits, then only converted number is returned otherwise 0 is returned. This method can skip the initial whitespace characters like space, tab, new line etc. .

Here is the code:

StringToInt.c


#include <stdio.h>

#include <conio.h>

#include <stdlib.h>

int main() {

  int i;

  i = atoi("100");

  printf("The integer value is: %d", i);

  getch();

  return 0;

}

Output will be displayed as:

STRING~1.EXE

Download Source Code:

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