Question

How to use tmpnam() function to generate temporary filename in C

Answer 1

#include <stdio.h>
    
int main(void)
{
    char buf[64];
 
    tmpnam(buf);
    printf("Temp filename 1: %s\n", buf);
 
    char *p = tmpnam(NULL);
    printf("Temp filename 2: %s\n", p);
 
    return 0;
}
   
   
   
   
/*
run:
   
Temp filename 1: /tmp/filehXJV3r
Temp filename 2: /tmp/filedgRYVU
 
*/

 

70+ SQL courses for beginners and professionals

Answer 2

#include <stdio.h>

int main(void) {
    char *name = NULL;

    if ((name = tmpnam(NULL)) != NULL) {
        printf("%s", name);
    } else {
        printf("Cannot create a unique filename\n");
    }
}




/*
run:

/tmp/fileO87mPs

*/

 

70+ SQL courses for beginners and professionals