C语言程序设计 循环结构？

// shuchusushu.cpp : 定义控制台应用程序的入口点。

//

#include "stdafx.h"

#include <iostream>

using namespace std

int prime(int x){

for(int i= 2i<x i++){

if(x%i == 0)

return 0

}

return 1

}

int _tmain(int argc, _TCHAR* argv[])

{

int m,k=0

int arr[2000]={0}

printf("输入50到2000之间的整数: ")

cfu:

scanf("%d",&m)

if (m >= 50 &&m <= 2000)

{

//判断在m以内有素数

for (int i =2i <mi++)

{

if (prime(i)==1){

printf("%d 是素数\n",i)

arr[k++]= i

}else{

printf("%d 不是素数\n",i)

}

}

}else{

printf("输入50到2000之间的整数")

goto cfu

}

cout <<"K的值： "<<k <<endl

for (int i = 0i <k-1i++)

{

for (int j = 0j <k-1-ij++)

{

if (arr[j] <arr[j+1] )

{

int temps = arr[j]

arr[j] = arr[j+1]

arr[j+1] = temps

}

}

}

printf("10个数排序：")

for (int i = 0i<ki++)

{

printf("%d ",arr[i])

}

while(1)

return 0

}

#include<iostream>

using namespace std

int main(){

char c

int s=0,z=0,k=0,q=0

while((c=getchar())!='\n'){

int x=int(c)

if(x>=48&&x<=57)s++

else if((x>=65&&x<=90)||(x>=97&&x<=122))z++

else if(x=32)k++

else q++

}

cout<<"you have input "<<s<<" numbers"<<endl

cout<<"you have input "<<z<<" letters"<<endl

cout<<"you have input "<<k<<" spaces"<<endl

cout<<"you have input "<<q<<" some else chars"<<endl

return 0

}

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