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1、例子：l #include 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
2、 have let go.l #include 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.l 比较两个数较大的那个：#include main()int a,b,max;scanf (“%d%d”,&a,&b);if (ab)max=a;e
3、lse max=b;printf (“%d”,max);l 输出a+b的值：#include void main()int a,b,x;scanf (“%d%d”,&a,&b);x=a+b;printf (“%d”,x);l 输出a,b中最大的一位数：#include int max(int x,int y)int z;if (xy) z=x;else z=y;return(z);void main()int a,b,c;scanf (“%d%d”,&a,&b);c=max(a,b);printf (“%dn”,c);l 输出Hello:#include int main()printf (“
4、Hello!”);return 0;l 求1100的和：#include int main()int s,n;s=0,n=1;A: s=s+n;n=n+1;if (n=100)goto A;printf (“%d”,s);l 请输入一个三位数，将其各位逆序输出：（如153，输出351）#include 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 void main()int x,a,b,c,d
5、;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%dn,d);买鸡：#include void main()int x,y,z;if(x=0&x=0&y=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 void main()int x=0,
6、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 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(%dt,z);y=(100-5*x-z/3)/3&y=100-x-z;y=y+1;printf(%dt,y);x=x+1;printf(%dt,x);l 计算x=20+3(x-1):#include void main()int ag
7、e(int x)int i,j;scanf(“%d”,&i);j=age(i);printf(“age=%dn”,j);int age(int x)int z;if(x=1) z=20;else z=age(x-1)+3;return(z);l 编写程序求圆柱体的表面积和体积：#include #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
8、; /*计算圆柱体体积*/printf(“s=%f,v=%fn”,s,v);l 自增，自减运算符的使用：#include void main()int i=5,j=5;int x,y;x=i+;y=+j;printf(“%dt%dn”,-x+,-(+y);printf(“%dt%dt%dt%dn”,i,j,x,y);l 自增、自减运算符的基本运算：#include void main()int k=4;int x,y,z;x=18-k+;printf(“x=%d”,x);printf(“k=%dn”,k);y=+k+6;printf(“y=%d”,y);printf(“k=%dn”,k);z=
9、+k+k+;printf(“z=%dn”,z);结果：x=14,k=5;y=12,k=6;z=14.l 输出单个字符：#include void main()char a,b;a=o;b=k;putchar(a);putchar(b);putchar(n);l 输入字符举例：#include 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 #include #include int main()int x,i=0,guess;srand(time(NULL);x=rand()%100
10、+1;printf(请你猜数：);doscanf(%d,&guess);if(xguess)printf(你猜小了！n);elseprintf(你赢了！n);break;i+;if (i=10)printf(随机数是：%dn,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 void main()int a=2,*p=&a,*q=&a;Printf(%d,%dn,*p+,*(q+);P=&a;q=&;Printf (%d%dn,*p,(*q)+);Printf(%d%dn,*p,+(*q);结果为：2,2
11、 2,2 4,4(从又向左算）#include Void main()Int a,b,c;Int *pa,*pb,*pc;Pa=&a;pb=&b;pc=&c;Scanf (%d%d,pa,pb);Printf (a=%d,b=%dn,*pa,*pb);C=a+b;Printf (c=%dn,*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？#includeint main() for(int i = 100; i = 200 ; i+) if(i%4=2&i%7=3&i%9=5) printf(%dn,i); return 0; 用选择法对10个整数排序：#include Void main()Int *p,i,a10;P=a;For (i=0;i10;i+)Scanf (