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  • 作业二

    1这题要注意int和double的使用

    #include<stdio.h>
    int main(void)
    {
    int num1,num2,a,b,c,e;
    double d;
    printf("Enter num1 and num2:");
    scanf("%d%d",&num1,&num2);
    a=num1+num2;
    b=num1-num2;
    c=num1*num2;
    d=num1/num2;
    e=num1%num2;
    printf("h=%d,c=%d,j=%d,s=%Lf,y=%d
    ",a,b,c,d,e);
    return 0;
    }


    3

    #include<stdio.h>
    int main(void)
    {
        int i,n;
        double x,y;
        y=1;
    
        printf("Enter n,x:");
        scanf("%d%Lf",&n,&x);
        for(i=1;i<=n;i++)
        y=y*x;
        
        printf("y=%.3f
    ",y);
        return 0;
    }

    4

    #include<stdio.h>
    int main()
    {
        int i,m,n;
        double y;
        y=0;
    
        printf("Enter m,n:");
        scanf("%d%d",&m,&n);
    
        for(i=m;i<=n;i++)
        y=y+(i*i+1/i);
        printf("y=%.3f
    ",y);
        return 0;
    }

    5 flag的使用

    #include<stdio.h>
    int main()
    {
        int n,flag;
        double item,sum,i;
    
        printf("Enter n:");
        scanf("%d",&n);
        flag=1;    
        sum=0;
    
        for(i=1;i<=n;i++){    
            item=flag*i/(2*i-1);  
            sum=sum+item;
            flag=-flag;
        }
    
        printf("sum=%f
    ",sum);
        return 0;
    }

    6

    #include<stdio.h>
    #include<math.h>
    int main(void)
    {
        int i,loan,month,money;
        double rate,m,n;
    
        printf("Enter loan,rate:");
        scanf("%d%Lf",&loan,&rate);
    
        for(i=5;i<=30;i++){
        month=i*12;
        m=rate*pow(1+rate,month);
        n=pow(1+rate,month)-1;
        money=loan*(m/n);
        printf("i=%d,money=%d
    ",i,money);
        }
    
        return 0;
    }

    7

    #include<stdio.h>
    #include<math.h>
    int main(void)
    {
        int n,i;
        double m,sum;
    
        printf("Enter n:");
        scanf("%d",&n);
        sum=0;
    
        for(i=1;i<=n;i++){
        m=pow(2,i);
        sum=sum+m;
        }
        printf("sum=%.3f
    ",sum);
        return 0;
    }

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  • 原文地址:https://www.cnblogs.com/liyang1995/p/3379238.html
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