摘要：
#includeint main(void){ int choice,i; double price; for(i=1;i<=5;i++){ printf("[1]Select apple \n"); printf("[2]Select rears \n"); printf("[3]Select oranges \n"); printf("[4]Select grapes \n"); printf("[0]exit \n"); printf("Enter choice:" 阅读全文
摘要：
#includeint main(void){ int repeat; char ch;/*定义一个字符*/ printf("Enter repeat:"); scanf("%d",&repeat); ch = getchar();/*变量ch接收从键盘上输入的一个字符*/ switch(ch){ case'A': printf("grade=90~100\n"); break; case'B': printf("grade=80~89\n"); break; case 阅读全文
摘要：
#includeint main(void){ int digit,letter,blank,other; char ch; int i; digit=letter=other=blank=0; printf("Enter 15 characters:"); for(i=1;i='a'&&ch='A'&&ch='0'&&ch=' '||ch<='\r') blank++; else other++; } printf("letter 阅读全文
摘要：
#includeint main(void){ int count,num,n; double grade,total; num=0; total=0; count=0; printf("Enter n:"); scanf("%d",&n); printf("Enter grades:"); scanf("%lf",&grade); while(grade>=0){ total=total+grade;/*计算总成绩*/ num++;/*计算总人数*/ if(grade>60) ... 阅读全文
摘要：
#includeint main(void){ int i,year,n; printf("Enter n:"); scanf("%d",&n); for(i=1;i<=n;i++){ printf("Enter year："); scanf("%d",&year); if((year%4==0&&year%100!=0)||(year%400==0)){/*==是指与数相比较是否相等，！=是指不等于*/ printf("Right!\n"); } else 阅读全文
摘要：
#includeint main(void){ int x,y; printf("输入x:"); scanf("%d",&x); if(x<0){ y=-1; } else if(x=0){ y=0; } else{ y=1; } printf("y=%d",y); return 0;} 阅读全文
摘要：
#includeint main(void){ int i,n,numerator,denominator,flag; double sum,item; printf("Enter n:"); scanf("%d",&n); numerator=1; denominator=1; sum=0; flag=1; for(i=1;i<=n;i++){ item=flag*(numerator*1.0/denominator);/*乘以1.0是为了把整数型转换成浮点型*/ numerator=numerator... 阅读全文
摘要：
#includeint main(void){ int m,n,i; double product,result; printf("Enter m:"); scanf("%d",&m); printf("Enter n:"); scanf("%d",&n); product=0; for(i=m;i<=n;i++){/*利用for循环求和*/ result=(i*i)+(1/i);/*计算公式*/ printf("%d",result); product=product+r 阅读全文
摘要：
#include#include/*调用POW数学函数*/int main(void){ int n,i,power; double product; printf("Enter n:"); scanf("%d",&n); product=0; for(i=1;i<=n;i++){ power=pow(2,i);/*调用函数*/ printf("%d",power); product=product+power;/*求和*/ } printf("product=%.0f\n",product); r. 阅读全文
摘要：
#includeint main(void){ int num1,num2,sum,difference,product,quotient,remainder; printf("Enter num1:"); scanf("%d",&num1); printf("Enter num2:"); scanf("%d",&num2); sum=num1+num2;/*计算两数的和*/ printf("sum=%d\n",sum); difference=num1-num2; printf 阅读全文