/* ransu2.c */
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main(void)
 {
    srand( (unsigned)time( NULL ) );
    printf("%d\n", rand());
    printf("%d\n", rand());
    printf("%d\n", rand());

    for(int i = 0; i < 20; i++)
       printf("%d\n", rand() % 100 + 1);

    return 0;
 }

===========================
$ ./a.exe
783762760
916972379
1097161265
44
93
7
60
61
18
58
32
40
8
27
36
32
60
52
6
57
31
73
36