例子：#include <stdio.h>main (){tips(); /*caller*/printf(“\n Success is about banging on after others have let go”);}tips() /*caller*/{printf (“\n When you reach the end of the rope tie a knot & hang on”,)0; }[上述程序的输出结果如下：When you reach the end of the ropt tie a knot & hang on.Success is about hanging on after others have let go.]#include <stdio.h>main(){int a,fact;printf(“\nEnter any number”);scanf(“%d”,&a);fact=rec(a);printf(“Factorial value is%d”,fact);}rec(x);int x;{int f;if(x==1)return(1);elsef=x*rec(x-1);return(f);}[其显示的结果为：Factorial value is 2.]比较两个数较大的那个：#include <stdio.h>main(){int a,b,max;scanf (“%d%d”,&a,&b);if (a>b)max=a;else max=b;printf (“%d”,max);}输出a+b的值：#include <stdio.h>void main(){int a,b,x;scanf (“%d%d”,&a,&b);x=a+b;printf (“%d”,x);}输出a,b中最大的一位数：#include <stdio.h>int max(int x,int y){int z;if (x>y) z=x;else z=y;return(z);}void main(){int a,b,c;scanf (“%d%d”,&a,&b);c=max(a,b);printf (“%d\n”,c);}输出Hello:#include <stdio.h>int main(){printf (“Hello!”);return 0;}求1~100的和：#include <stdio.h>int main(){int s,n;s=0,n=1;A: s=s+n;n=n+1;if (n<=100)goto A;printf (“%d”,s);}请输入一个三位数，将其各位逆序输出：（如153，输出351）#include <stdio.h>void main(){int x,y,a,b,c;printf ("请输入一个三位数的数：");scanf("%d",&x);a=x/100;b=x%100/10;c=x%10;y=c*100+b*10+a;printf ("\n%d",y);}#include <stdio.h>void main(){int x,a,b,c,d;printf ("请输入一个三位数的数：");scanf("%d",&x);a=x/100;b=x%100/10;c=x%10;d=c*100+b*10+a;printf ("\n%d\n",d);}买鸡：#include <stdio.h>void main(){int x,y,z;if(x>=0&&x<=19,y>=0&&y<=33,z>=0&&z<=100) while (x=19){x=0;5*x+3*y+z/3==100&&x+y+z==100;x=x+1;}printf("%d%d%d",x,y,z);}y==(100-5*x-z/3)/3&&y==100-x-z;z==(100-5*x-3*y)*3&&z==100-x-y;#include <stdio.h>void main(){int x=0,y,z;while (x<=19){5*x+3*y+z/3==100&&x+y+z==100;x=x+1;printf("%d%d%d",x,y,z);}}#include <stdio.h>void main(){int x=0,y=0,z=0;while (x<=19){while (y<=33){while (z<=100){z==(100-5*x-3*y)*3&&z==100-x-y;z=z+1;printf("%d\t",z);}y==(100-5*x-z/3)/3&&y==100-x-z;y=y+1;printf("%d\t",y);}x=x+1;printf("%d\t",x);}}计算x=20+3(x-1):#include <stdio.h>void main(){int age(int x)int i,j;scanf(“%d”,&i);j=age(i);printf(“age=%d\n”,j);}int age(int x){int z;if(x==1) z=20;else z=age(x-1)+3;return(z);}编写程序求圆柱体的表面积和体积：#include <stdio.h>#define PI 3.14 /*定义PI为符号常量，值为3.14*/ void main(){float r,h,s,v;printf(“请输入半径r和高h的值：\n”);scanf(“%f%f”,&r,&h); /*输入半径r和高h*/s=2*PI*r*h; /*计算圆柱体表面积*/ v=PI*r*r*h; /*计算圆柱体体积*/ printf(“s=%f,v=%f\n”,s,v);}自增，自减运算符的使用：#include <stdio.h>void main(){int i=5,j=5;int x,y;x=i++;y=++j;printf(“%d\t%d\n”,-x++,-(++y));printf(“%d\t%d\t%d\t%d\n”,i,j,x,y);}自增、自减运算符的基本运算：#include <stdio.h>void main(){int k=4;int x,y,z;x=18-k++;printf(“x=%d”,x);printf(“k=%d\n”,k);y=++k+6;printf(“y=%d”,y);printf(“k=%d\n”,k);z=++k+k++;printf(“z=%d\n”,z);}结果：x=14,k=5;y=12,k=6;z=14.输出单个字符：#include <stdio.h>void main(){char a,b;a=‟o‟;b=‟k‟;putchar(a);putchar(b);putchar(…\n‟);}输入字符举例：#include <stdio.h>void main(){char c;c=getchar(); /*从键盘读入一个字符*/ putchar(c); /*显示输入的字符*/}猜数游戏：#include <stdio.h>#include <stdlib.h>#include <time.h>int main(){int x,i=0,guess;srand(time(NULL));x=rand()%100+1;printf("请你猜数：");do{scanf("%d",&guess);if(x<guess){printf ("你猜大了！\n");}else{if(x>guess)printf("你猜小了！\n");else{printf("你赢了！\n");break;}}i++;if (i>=10){printf("随机数是：%d\n",x);printf("你已经猜错了10次，我赢了，哈哈！\n");break;}printf("请你再猜：");}while(1);}#include <stdio.h>void main(){int a=2,*p=&a,*q=&a;Printf("%d,%d\n",*p++,*(q++));P=&a;q=&;Printf ("%d%d\n",*p,(*q)++);Printf("%d%d\n",*p,++(*q);}结果为：2,22,24,4(从又向左算）#include <stdio,h>V oid main(){Int a,b,c;Int *pa,*pb,*pc;Pa=&a;pb=&b;pc=&c;Scanf ("%d%d",pa,pb);Printf ("a=%d,b=%d\n",*pa,*pb);C=a+b;Printf ("c=%d\n",*pc);*pc=a+*pb;Printf ("c=%d从100到200之间有哪些数除4多2，除7多3，除9多5？#include<stdio.h>int main(){for(int i = 100; i <= 200 ; i++)if(i%4==2&&i%7==3&&i%9==5)printf("%d\n",i);return 0;}用选择法对10个整数排序：#include <stdio.h>V oid main(){Int *p,i,a[10];P=a;For (i=0;i<10;i++)Scanf (。