#include<stdio.h>//三角形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()//十行倒三角型形 {    printf("* * * * * * * * * *\n");    printf(" * * * * * * * * *\n");    printf("  * * * * * * * *\n");    printf("   * * * * * * *\n");    printf("    * * * * * *\n");    printf("     * * * * *\n");    printf("      * * * *\n");    printf("       * * *\n");    printf("        * *\n");    printf("         *\n");    return 0;}

#include<stdio.h>int main()//五级制成绩(A~E),输出相应的百分制成绩(0~100)区间{    char score;    scanf("%c",&score);    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;    }    return 0;}

#include<stdio.h>int main()//计算华氏温度100°F对应的摄氏温度{    int F=100;    int C;    printf("C=%d",C=5*(F-32)/9);    return 0;}

#include<stdio.h>int main()//100米自由落体{    int g=10;    int t=3;    int height;    height=0.5*g*t*t;    printf("height=%d",height);    return 0;}

#include<stdio.h>int main()//输出整数的个位数字、十位数字和百位数字的值{    int a;    scanf("%d",&a);    while(a!=0)    {        printf("%d\n",a%10);        a=a/10;    }    return 0;}

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

#include<stdio.h>#include<math.h>int main()//计算存款利息 {    int money,year;    double rate,interest;    printf("输入存款金额: ");    scanf("%d",&money);    printf("输入存期: ");    scanf("%d",&year);    printf("输入年利率: ");    scanf("%lf",&rate);    interest=money*pow(1+rate,year)-money;    printf("interest=%.2f\n",interest);    return 0;}

#include<stdio.h>int main()//阶梯电价 {    float n;    printf("月用电量: ");    scanf("%f",&n);    if(n<=50)        printf("月电费:%f\n",n*0.53);    else        printf("月电费:%f\n",50*0.53+(n-50)*(0.53+0.05));    return 0;}