Question

How to use snprintf() function to write formatted data to sized string in C

Answer 1

#include <stdio.h>

// int snprintf ( char * s, size_t n, const char * format, ... );
   
int main(void)
{
	char str[64];
	int n;

	n = snprintf(str, 64, "num1 is: %d and num2 is: %f", 27, 3.14);
	puts(str);
	printf("Number of characters written to string: %d", n);

    return 0;
}
  
/*
run:
  
num1 is: 27 and num2 is: 3.140000
Number of characters written to string: 33

*/

 

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