#include<stdio.h>int main()//华氏温度转摄氏温度 {    int f;    int c;    printf("输入华氏温度: ");     scanf("%d",&f);        c=5*(f-32)/9;    printf("%d",c);}

#include<stdio.h>int main(){    printf("*\n");    printf("**\n");    printf("***\n");    printf("****\n");    printf("*****\n");    printf("******\n");    printf("*******\n");    printf("********\n");    printf("*********\n");    printf("**********\n");     

#include<stdio.h>int main(){    printf("**********\n");    printf("**********\n");    printf("**********\n");    printf("**********\n");    printf("**********\n");    printf("**********\n");    printf("**********\n");    printf("**********\n");    printf("**********\n");    printf("**********\n");}

#include<stdio.h>int main(){    printf("* * * * * * * * * *\n");    printf(" * * * * * * * * *\n");    printf("  * * * * * * * *\n");    printf("   * * * * * * *\n");    printf("    * * * * * *\n");    printf("     * * * * *\n");    printf("      * * * *\n");    printf("       * * *\n");    printf("        * *\n");    printf("         *\n");}

#include <stdio.h> int main(){    char score;    printf("请输出等级:");     scanf ("%c",&score);//A B C D E     switch (score)  {    case‘A‘:    printf ("90~100");    break;    case‘B‘:    printf("80~89");    break;     case‘C‘:    printf("70~79");    break;    case‘D‘:    printf("60~69");    break;    case‘E‘:    printf("0~59");    break;    default:    printf("输入有误\n");    break;     }  return 0;}

#include<stdio.h>#include<math.h>int main() {     int g=10;     int t=3;     int height;     height=0.5*g*t*t;      printf("h=%d",height);      return 0;  }

#include<stdio.h>#include<math.h>int main(){    double x;    double y;    printf("请输入x的值：");    scanf("%lf",&x);    if(x>=0)        y=sqrt(x);    else        y=pow(x-1,2)+2*x+1/x;    printf("y=f(x)=%.2f",y);    }

#include<stdio.h> #include<math.h>int main() {   int money,year;   double rate,interest,a;   printf("请输入存款金额:");   scanf("%d",&money);    printf("请确认存期:");    scanf("%d",&year);   printf("请确认年利率:");   scanf("%lf",&rate);   a=pow(1+rate,year);   interest=money*(a-1);   printf("存款利息为:%f",interest);}

#include <stdio.h>int main(){   int x;   double y;   printf("请输入本月用电量：");   scanf("%d",&x);   if(x<=50)      y=0.53*x;   else      y=50*0.53+(x-50)*0.58;   printf("本月电费为:%.2lf",y);}