C语言第五次作业

#include <stdio.h>
int main()
{
    int x=90;
    int y;//车速 
    printf("超速的车速：");
    scanf("%d",&y);
    if(y>1.1*x && y<1.5*x)
    {
        printf("处罚200元"); 
    }
    if(y>1.5*x)
    {
        printf("吊销执照");
    }

#include<stdio.h>
int main ()
{
    int a,b,c,t;
    printf("输入3个数:");
    scanf("%d %d %d",&a,&b,&c);
    if(a<b)
    {
        t=a;a=b;b=t;
    }
    if(a<c)
    {
        t=a;a=c;c=t;
    }
    if(b<c)
    {
        t=b;b=c;c=t;
    }
    printf("顺序是%d %d %d",a,b,c);
    return 0;

#include<stdio.h>
int main()//出租车计价
{
     int s,time,rmb;
     printf("请输入行驶总里程：");
     scanf("%lf",&x);
     printf("请输入等待时间：");
     scanf("%lf",&y);     
     if (time%5==0)
     {
         if(s<=0)
         rmb=(time/5)*2;
          else if (s<=3)
           rmb=10+(time/5)*2;
        else if(s<=10)
           rmb=10+(s-3)*2+(time/5)*2;
          else
          rmb=10+(10-3)*2+(s-10)*3+(time/5)*2;
     }
     else 
     {
        if (s<=0) 
          rmb=(time/5+1)*2;
          else if (s<=3)
        rmb=10+(time/5+1)*2;
         else if(s<=10)
           rmb=10+(s-3)*2+(time/5+1)*2;
          else
          rmb=10+(10-3)*2+(s-10)*3+(time/5+1)*2;
     }
    printf("乘客应付%d元\n",rmb);
    return 0;
}

#include<stdio.h>
int main()
{
    int score,n,i;  
    int a,b,c,d,e;
    a=b=c=d=e=0;
    printf("请输入学生个数：\n"); 
    scanf("%d",&n); 
    for(i=1;i<=n;i++)
    {
    printf("请输入第%d个学生成绩：\n",i);    
    scanf("%d",&score);    
        if(score>=90)
            a++;                    
        else if(score>=80 && score<90)
             b++;            
        else if(score>=70 && score<80)         
             c++;            
         else if(score>=60 && score<70)         
             d++;            
         else          
             e++;
    }
    printf("A：%d人, B：%d人, C：%d人, D：%d人, E：%d人\n",a,b,c,d,e);
    return 0;

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

#include <stdio.h>
int main()
{
    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:E;break;
        case 2:D;break;
        case 3:C;break;
        case 4:B;break;
        case 5: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;
}