王仲超 160809312 会的都敲上了

# include <stdio.h>
int main()
{
    int x,y,z,a,b;
    printf("请输入三个要比较的整数：");
    scanf("%d %d %d",&x,&y,&z);
    if (x>y)
    {
        a=x;
    }
    else
    {
        a=y;
    }
    if (a>z)
    {
        b=a;
    }
    else
    {
        b=z;
    }
    printf("最大的数为:%d",b);
    return 0;
}

#include<stdio.h>
int main()
{
    int a,b;
    printf("请输入车速和限速："); 
    scanf("%d %d",&a,&b);
    double c=(double)(a-b)*100/b;
    if(c<=10)
        printf("未超速");
    else if(c<50 && c>10)
        printf("超速，罚款200元",c);
    else
        printf("严重超速，吊销驾驶证",c);
    return 0;
}

#include <stdio.h>
int main()//五级制成绩分布 
{
    int i,A,B,C,D,E,n,s;
    A=B=C=D=E=0;
    printf("Enter n:");
    scanf("%d",&n);
    for(i=0;i<n;++i)
    {
        printf("Enter grade %d:",i+1);
        scanf("%d",&s);
        switch(s/10)
        {
        case 1:
        case 2:
        case 3:
        case 4:
        case 5:E++;break;
        case 6:D++;break;
        case 7:C++;break;
        case 8:B++;break;
        case 9:
        case 10:A++;break;
        }
    }
    printf("The number of A(90~100):%d\n",A);
    printf("The number of B(80~89):%d\n",B);
    printf("The number of C(70~79):%d\n",C);
    printf("The number of D(60~69):%d\n",D);
    printf("The number of E(0~59):%d\n",E);
    return 0;

#include<stdio.h>
int main()
{
    int i,j,k;
    for(j=1;j<=10;j++)
    {
        for(k=1;k<j;k++)
            printf(" ");
        for(i=1;i<=11-j;i++)            
            printf("*");
        printf("\n");    
    }     
    return 0;
}