#include<stdio.h>int main(){    int a,b,c,i;    printf("输入三个整数:");    scanf("%d %d %d",&a,&b,&c);    if(a>b)    {        i=b;        b=a;        a=i;    }    if(a>c)    {        i=c;        c=a;        a=i;    }    if(b>c)    {        i=c;        c=b;        b=i;    }    printf("这三个数从小到大分别是：%d %d %d",a,b,c);    return 0;} 

#include<stdio.h>int main()  {int a=10,b;  for(;a>0;a--){  for(b=1;b<=10-a;b++)printf(" ");  for(b=1;b<=a-1;b++)printf("*");  printf("\n");}  }

#include<stdio.h> int main(){    int a;    int b;    int d=10;    printf ("请输入总路程与停留时间：");     scanf ("%d %d",&a,&b);    if (a<=3)    {        printf("应付：%d",d+2*(b/5));    }    else if(3<a)    {        printf("应付：%d",d+(a-3)*3+2*(b/5));    }    return 0;}

#include<stdio.h>int main()  {    int a;//重量     int b;    scanf("%d %d",&a,&b);    double c=(double)(a-b)*100/b;    if(10<c && c<50)    printf("超重！罚款200元");    else if(c>50)     printf("超重！吊销身份证");    else     printf("未超重");    return 0;}

#include <stdio.h>int main(){    int i,A,B,C,D,E,n,s;    A=B=C=D=E=0;    printf("输入总人数n和他们的分数:");    scanf("%d",&n);    for(i=0;i<n;++i)    {        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:A++;break;        case 10:A++;break;        }    }    printf("成绩为A(90~100):%d\n",A);    printf("成绩为B(80~89):%d\n",B);    printf("成绩为C(70~79):%d\n",C);    printf("成绩为D(60~69):%d\n",D);    printf("成绩为E(0~59):%d\n",E);    return 0;}