#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");    return 0; }

#include<stdio.h>int main(){	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;					}}

include<stdio.h> int main(){    int F=100;    int C;    C=(5*(F-32)/9);     printf("%d",C);    return 0;}

#include<stdio.h>int main(){    int t=2;    int g=20;    int H;    H=0.5*g*t*t;    printf("f(t)=%d",H);    return 0;    } 

#include<stdio.h>int main(){    int a,b,c,d;    a=152;    b=a/100;    c=(a/10)%10;    d=a%10;    printf(" 百位%d 十位%d 个位%d",b,c,d);    return 0;}

#include<stdio.h>#include<math.h>int main(){    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);} 

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

#include<stdio.h>int main(){    double x;    double y;    scanf("%lf",&x);    if(x<=50)    y=0.53*x;    else    y=0.53*50+(x-50)*0.58;    printf("f(x)=%f",y);}

#include<stdio.h>int main()十行三角形 {    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()//十行十列矩形 {    printf("* * * * * * * * * *\n");    printf("* * * * * * * * * *\n");    printf("* * * * * * * * * *\n");    printf("* * * * * * * * * *\n");    printf("* * * * * * * * * *\n");    printf("* * * * * * * * * *\n");    printf("* * * * * * * * * *\n");    printf("* * * * * * * * * *\n");    printf("* * * * * * * * * *\n");    printf("* * * * * * * * * *\n");    return 0;}