使用srand()函数生成随机数

#include <stdio.h> 
#include <stdlib.h> 
#include <time.h> 

int main() {
   int iRandomNum = 0;
   srand(123);
   iRandomNum = (rand() % 4) + 1;
   printf("\nFortune cookie - Chapter 3\n");

   switch (iRandomNum) {
   case 1:
      printf("\n a.\n");
      break;
   case 2:
      printf("\n b.\n");
      break;
   case 3:
      printf("\n c.\n");
      break;
   case 4:
      printf("\n d.\n");
      break;
   }
   printf("%d\n ", (rand() % 49) + 1);
   printf("%d\n ", (rand() % 49) + 1);
   printf("%d\n ", (rand() % 49) + 1);
   printf("%d\n ", (rand() % 49) + 1);
   printf("%d\n ", (rand() % 49) + 1);
   printf("%d\n", (rand() % 49) + 1);
}