How to Convert an Int to String in C

In this post, we'll learn how to convert an integer to a string in C.

sprintf()

To convert an integer to a string, you can use the sprintf() function in C.

Here's how to convert the int 12345 to the string "12345":

	#include <stdio.h>

int main() {
    int number = 12345;
    char string[5];

    sprintf(string, "%d", number);

    printf("%s\n", string);
}

The output will be the number converted to a string:

	12345

The sprintf() function has this syntax:

	int sprintf(char *str, const char *format, ...)

It takes any value and prints it to a string. It is similar to the printf() function except it doesn't print to the console but instead returns the string.

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