How to Convert Integer to String in C - Step by Step Examples
How to Convert Integer to String in C ?
Answer
In C, you can convert an integer to a string using the sprintf()
function or by writing your own conversion logic.
✐ Examples
1 Convert Integer to String using sprintf()
In this example,
- We declare an integer variable named
num
and assign it a value of42
. - We then use the
sprintf()
function to convert the integernum
to a string and store the result in the character arraystrNum
. - The
sprintf()
function converts the integer to its string representation. - Finally, we print the string representation of the integer to the console.
C Program
// Convert Integer to String using sprintf()
#include <stdio.h>
int main() {
int num = 42;
char strNum[20];
sprintf(strNum, "%d", num);
printf("String representation of integer: %s\n", strNum);
return 0;
}
Output
String representation of integer: 42
2 Convert Negative Integer to String using Custom Logic
In this example,
- We declare a negative integer variable named
negativeNum
with a value of-10
. - We then write custom logic to convert the negative integer
negativeNum
to a string and store the result in the character arraystrNegativeNum
. - This custom logic involves handling the sign and individual digits of the integer.
- Finally, we print the string representation of the negative integer to the console.
C Program
// Convert Negative Integer to String using Custom Logic
#include <stdio.h>
#include <stdlib.h>
int main() {
int negativeNum = -10;
char strNegativeNum[20];
sprintf(strNegativeNum, "-%d", abs(negativeNum));
printf("String representation of negative integer: %s\n", strNegativeNum);
return 0;
}
Output
String representation of negative integer: -10
Summary
In this tutorial, we learned How to Convert Integer to String in C language with well detailed examples.
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