題目一：取出整數(shù)的最后一位

#include<stdio.h>
int main ()
{
    int a=0;
    printf("輸入一個整數(shù):");
    scanf("%d",&a);
    printf("整數(shù)的最后一位數(shù)是:%d",a%10);
    return 0;
}

題目二：最大值

#include <stdio.h>
int main()
{
    int a,b,c;
    int max;
    printf("輸入三個整數(shù):");
    scanf("%d %d %d",&a,&b,&c);
    if(a>b>c)
    {
        max=a>b?a:b;
    }else{
        max=b>c?b:c;
    }
    printf("%d",max);
    return 0;
}

題目三：季節(jié)輸出

#include <stdio.h>
int main()
{
      int month;
      printf("請輸入月份：");
      scanf("%d",&month);
      switch(month)
      {
      case 3:
      case 4:
      case 5:
          printf("春\n");
          break;
      case 6:
      case 7:
      case 8:
          printf("夏\n");
          break;
      case 9:
      case 10:
      case 11:
          printf("秋\n");
          break;
      case 12:
      case 1:
      case 2:
          printf("冬\n");
          break;
      }
    return 0;
}