1）三位逆序

1 #include
     
       2  3 int main() 4 {   int orig = 0; 5     int bai = 0; 6     int shi = 0; 7     int ge =0; 8      9     printf("请输入三位数\n");10     scanf("%d", &orig);11     ge = orig % 10;12     shi = orig / 10 % 10;13     bai = orig / 100;14     15     printf("所得逆序为%d\n", ge*100 + shi*10 + bai);16     return 0;17 }
     

2）BJT与UTC换算

#include
     
      int main(){   int hour1 = 0;    int minute1 = 0;    int BJT = 0;        printf("请输入时间（北京时间）格式如2307(0-2359之间)\n");    scanf("%d", &BJT);    if ( 0< BJT < 2359){        hour1 = BJT / 100;        minute1 = BJT % 100;        if ( hour1 > 7 ){            printf("协调时为今日%d", (hour1 - 8)*100 + minute1);        }else{            printf("协调时为前一日%d", (hour1 + (24-8))*100 + minute1);        }//利用了补码来计算跨日时间            }else{        printf("输入格式有误，请重新输入\n");    }         return 0;}
     

3）RS报告

 switch( expression ) {

    case A:

      statement list;

      break;

    case B:

      statement list;

      break;

    ...

    case N:

      statement list;

      break;

    default:

      statement list;

      break;

  }

1 #include
     
       2  3 int main() 4 {   int orig; 5     int readability; 6     int strenth; 7      8     printf("请输入RS数据（[11，59]之间）\n"); 9     scanf("%d", &orig);10     11     readability = orig / 10;12     strenth = orig % 10;13 14         switch( readability ){15         case 1 : printf("Unreadable,");break;16         case 2 : printf("Barely readable, occasional words distinguishable,");break;17         case 3 : printf("Readable with considerable difficulty,");break;18         case 4 : printf("Readable with practically no difficulty,");break;19         case 5 : printf("Perfectly readable,");break;20     }21         switch( strenth ){22         case 1 : printf("faint signals, barely perceptible");break;23         case 2 : printf("very weak signals");break;24         case 3 : printf("weak signals");break;25         case 4 : printf("fair signals");break;26         case 5 : printf("fairly good signals");break;27         case 6 : printf("good signals");break;28         case 7 : printf("moderately strong signals");break;29         case 8 : printf("strong signals");break;30         case 9 : printf("extremely strong signals");break;31     }32 33     return 0;34     35 }
     

 

4）奇偶个数

#include
     
      int main(){    int even = 0;    int odd = 0;    int x;    scanf("%d", &x);        while( x != -1 ){        if( x%2 == 0 ) even++;        else odd++;        scanf("%d", &x);    }    if( x == -1 ){        printf("%d %d", even, add);    }    return 0;}