A simple C program that initializes an array with 100 elements and prints it.

print_array.c

#include <stdio.h>

int main ()
{
    int a[100];
    for (int i = 0; i < 100; i++) {
      a[i] = i;
    }
    for (int i = 0; i < 100; i++) {
      printf("%d ", a[i]);
    }
    printf("\n");

    return 0;
}