160809309 朱玉撑 第三次作业

#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");
    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;
        default:
        printf("输入有误");
        break; 
    }
    return 0;

#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=3;
    int g=10;
    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("百位是%d 十位是%d 个位是%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>
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);
}