#include#includeint main(void){char s[2][10];strcpy(s[0],"Tom");strcpy(s[1],"Jerry!");printf("%s and %s\n", s[0],s[1]);return 0;}

#include#includedouble fun(int x){double y=0;if(x==1) return 1;else y=pow(x,x)+fun(x-1);return y;}int main(void){printf("%6.0f\n"fun(3));return 0;}

#includeint main(void){int i;char x[ ][20]={"Beijing","Shanghai","Guangzhou","Shenzhen"},*p;for(i=0;i< 4;i++){p=x[i];if(i%2) printf("%s",p);}return 0;}

从键盘输入自然数n(0

从键盘输入x的值，计算并输出x-x³/3!+x5/5!-x7/7!+...的近似值，直到公式中最后一项的绝对值小于10-4为止。

输入圆半径r和运算标志m,若m为a输出圆面积；m为c输出圆周长；m为b则二者均输出。#include#define PI 3.1415926int main(void){char m; float t,c,a;float area,circle;scanf("%c%f", &m,&r);printf("r=%.2f\n",r);area=PI*r*r;circle=2*PI*r;switch(    ) /*第一空*/{case 'a':printf("area=%.2f\n",area);break;    /*第二空*/printf("circle=%.2f\n",circle);break;case 'b':printf("area=%.2f,circle=%.2f\n",area,circle);    /*第三空*/default:printf("mark is wrong!\n");}return 0;}

输入一个字符串，以$为结束标志，分别统计小写英文字母a、b、......的个数保存至数组元素n[0]、n[1]、n[2]......中，并输出统计结果。#includeint main(void){int n[26]={0},k;char c;while (    !='$') /*第一空*/if (C >='a'&&c

从键盘输入年份，判断是否是闰年。#include int main(void){int year,yes;scanf("%d",&year);if(year%4==0&&year%100!=0) yes=1;else if(    ) yes=1; /*第一空*/else      ; /*第二空*/if(    ) printf("%d is ",year); /*第三空*/else printf("%d is not ",year);printf("a leap year.\n");returm 0; }

下列属于C语言关键字的是

回车换行的转义字符是