实验三

 

一. 程序代码

1.计算 s = 22 + 42 + 62 + 82 + 102 + . . . . +1002

#include "stdafx.h"

int main(int argc, char* argv[])
{    
    long s;
    s = 0;
    int a=22;
    for(;a<=1002;a+=20){
        s+=a;
    }
    printf("%lld\n",s);


    return 0;
}

#include "stdafx.h"

int main(int argc, char* argv[])
{    
    long s;
    s = 0;
    int a=22;
    while(a<=1002){
        s+=a;
        a+=20;
    }
    printf("%lld\n",s);


    return 0;
}

#include "stdafx.h"

int main(int argc, char* argv[])
{    
    long s;
    s = 0;
    int a=22;
    do{
        s+=a;
        a+=20;
    }while(a<=1002);
    printf("%lld\n",s);


    return 0;
}

2.水仙花数

#include "stdafx.h"
#include<math.h>
int main(int argc, char* argv[])
{
    int a,b,c,d;
    for (a = 100 ; a <= 999 ; a++){
        b = a%10;
        c = (a/10)%10;
        d = a/100;
        if(a == pow(b,3) + pow(c,3) + pow(d,3)) printf("%d\n",a);
    }
        return 0;
}

3.有 1,2,3,4,5,五个数字，编写程序，计算该五个数字能组成多少个互不相同且无重复的三位数

#include "stdafx.h"

int main(int argc, char* argv[])
{
    int a, b, c;
    int num=0;
    for(a=1;a<=5;a++)
        for(b=1;b<=5;b++)
            for(c=1;c<=5;c++)
                if(a == b || b==c || a==c) continue;
                else{
                    printf("%d\t",100 * a + 10 * b + c);
                    num++;
                }
    printf("%d\n",num);
    return 0;
}

 

二. 程序运行结果截图

1.

2.

3.

标签：main,stdafx,int,argv,char,实验,include
来源： https://www.cnblogs.com/p201821440039/p/10750015.html