#include <stdio.h>
#include <stdlib.h>
int main(void)
{
// void *calloc(size_t nmemb, size_t size);
// nmemb: The number of elements in the array.
// size: The size of each element in bytes.
char* buff = calloc(1, 15);
if (!buff) { fprintf(stderr, "Memory Failure.\n"); exit(EXIT_FAILURE); }
int a = 714;
int b = 9012;
char c[4] = "ABC";
// snprintf(str, size, format, ...);
// str: It is a pointer to the buffer.
// size: It is the maximum number of bytes that will be written to the buffer.
// format: %c%d... like in printf.
// Return Value - The number of characters that have been written on the buffer
int result = snprintf(buff, 14, "%03d-%04d-%s", a, b, c);
printf("result is: %d - buff is: %s\n", result, buff);
free(buff); // release resources no longer needed
return 0;
}
/*
run:
result is: 12 - buff is: 714-9012-ABC
*/
