我是大一新生，求大神教育 - C语言论坛

已结贴√ 问题点数：10 回复次数：11

我是大一新生，求大神教育

这是我编的
/*给10z组a b c求证若组成三角形求其周长面积（精确小数点两位）不成立输出a b c*/
#include<stdio.h>
#include<math.h>
int main(void)
{
    int i;
    double a,s,b,c,m,area;    /*m为周长，area为面积*/
    for(i=1;i<=10;i++){
        printf("enter a b c:");
        scanf("a=%lf,b=%lf,c=%lf\n",a,b,c);
        if(a+b>c&&a-b<c){
            m=a+b+c;
            s=(a+b+c)/2;
            area=sqrt(s*(s-a)*(s-b)*(s-c));
            printf("m=%.2f,area=%.2f\n",m,area);
        }
        else{
            printf("a=%.2f,b=%.2f,c=%.2f\n",a,b,c);
        }
    }
    return 0;
}
输出结果是乱码好多数字
                enter a b c:4 5 6
a=-92559631349317831000000000000000000000000000000000000000000000.00,b=-92559631
349317831000000000000000000000000000000000000000000000.00,c=-9255963134931783100
0000000000000000000000000000000000000000000.00
enter a b c:a=-92559631349317831000000000000000000000000000000000000000000000.00
,b=-92559631349317831000000000000000000000000000000000000000000000.00,c=-9255963
1349317831000000000000000000000000000000000000000000000.00
enter a b c:a=-92559631349317831000000000000000000000000000000000000000000000.00
,b=-92559631349317831000000000000000000000000000000000000000000000.00,c=-9255963
1349317831000000000000000000000000000000000000000000000.00
enter a b c:a=-92559631349317831000000000000000000000000000000000000000000000.00
,b=-92559631349317831000000000000000000000000000000000000000000000.00,c=-9255963
1349317831000000000000000000000000000000000000000000000.00
enter a b c:a=-92559631349317831000000000000000000000000000000000000000000000.00
,b=-92559631349317831000000000000000000000000000000000000000000000.00,c=-9255963
1349317831000000000000000000000000000000000000000000000.00
enter a b c:a=-92559631349317831000000000000000000000000000000000000000000000.00
,b=-92559631349317831000000000000000000000000000000000000000000000.00,c=-9255963
1349317831000000000000000000000000000000000000000000000.00
enter a b c:a=-92559631349317831000000000000000000000000000000000000000000000.00
,b=-92559631349317831000000000000000000000000000000000000000000000.00,c=-9255963
1349317831000000000000000000000000000000000000000000000.00
enter a b c:a=-92559631349317831000000000000000000000000000000000000000000000.00
,b=-92559631349317831000000000000000000000000000000000000000000000.00,c=-9255963
1349317831000000000000000000000000000000000000000000000.00
enter a b c:a=-92559631349317831000000000000000000000000000000000000000000000.00
,b=-92559631349317831000000000000000000000000000000000000000000000.00,c=-9255963
1349317831000000000000000000000000000000000000000000000.00
enter a b c:a=-92559631349317831000000000000000000000000000000000000000000000.00
,b=-92559631349317831000000000000000000000000000000000000000000000.00,c=-9255963
1349317831000000000000000000000000000000000000000000000.00
Press any key to continue

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第 2 楼

得分:2

赋值语句错了。应该是&a,&b,&c

去追寻更高的技术领域。永不停止。

第 3 楼

得分:2

在scanf中缺少了取地址符& 否则你输入的数据会找不到内存地址，应该是&a ,&b, &c ,自己再运行一下看看，水平所限，我也只能帮你这些

第 4 楼

得分:2

#include<stdio.h>
#include<math.h>
int main(void)
{
    int i;
    double a,s,b,c,m,area;    /*m为周长，area为面积*/
    for(i=1;i<=10;i++){
        printf("enter a b c:");
        scanf("%lf,%lf,%lf",&a,&b,&c);
        if(a+b>c&&a-b<c){
            m=a+b+c;
            s=(a+b+c)/2;
            area=sqrt(s*(s-a)*(s-b)*(s-c));
            printf("m=%.2f,area=%.2f\n",m,area);
        }
        else{
            printf("a=%.2f,b=%.2f,c=%.2f\n",a,b,c);
        }
    }
    return 0;
}

DO IT YOURSELF !

第 5 楼

得分:2

回复楼主记忆回不去

/*给10z组a b c求证若组成三角形求其周长面积（精确小数点两位）不成立输出a b c*/
#include<stdio.h>
#include<math.h>
int main(void)
{
    int i;
    double a,s,b,c,m,area;    /*m为周长，area为面积*/
    for(i=1;i<=10;i++){
        printf("enter a b c:");
        scanf("a=%lf,b=%lf,c=%lf\n",a,b,c);
        if(a+b>c&&a-b<c){
            m=a+b+c;
            s=(a+b+c)/2;
            area=sqrt(s*(s-a)*(s-b)*(s-c));
            printf("m=%.2f,area=%.2f\n",m,area);
        }
        else{
            printf("a=%.2f,b=%.2f,c=%.2f\n",a,b,c);
        }
    }
    return 0;
}

scanf("a=%lf,b=%lf,c=%lf\n",a,b,c);你的这句错了，再好好看看

[ 本帖最后由浅唱我的Time 于 2012-11-8 09:58 编辑 ]

第 6 楼

得分:0

回复 5楼浅唱我的Time

这个问题我改过了不过输出的还是乱码

第 7 楼

得分:0

我还分开搞/*给10z组a b c求证若组成三角形求其周长面积 b不成立输出a b c*/
#include<stdio.h>
#include<math.h>
int main(void)
{
    int i;
    double a,s,b,c,m,area;    /*m为周长，area为面积*/
    for(i=1;i<=10;i++){
        printf("enter a:");
        scanf("\n",&a);
        printf("enter b:");
        scanf("\n",&b);
        printf("enter c:");
        scanf("\n",&c);
        if(a+b>c&&a+c>b&&b+c>a){
            m=a+b+c;
            s=(a+b+c)/2;
            area=sqrt(s*(s-a)*(s-b)*(s-c));
            printf("m=%f,area=%f\n",m,area);
        }
        else{
            printf("a=%f,b=%f,c=%f\n",a,b,c);
        }
    }
    return 0;
}

第 8 楼

得分:2

输入语句格式。相关变量初始化。

www.qunxingw.wang

第 9 楼

得分:2

a=3,b=4,c=5
按照你scanf里的格式输入

第 10 楼

得分:0

#include<stdio.h>
#include<math.h>
int main()
{
    int i;
    double a,s,b,c,m,area;    /*m为周长，area为面积*/
    for(i=1; i<=10; i++)
    {
        printf("enter a b c:");
        scanf("a=%lf,b=%lf,c=%lf",&a,&b,&c);
        getchar();
        if(a+b>c&&a-b<c)
        {
            m=a+b+c;
            s=(a+b+c)/2;
            area=sqrt(s*(s-a)*(s-b)*(s-c));
            printf("m=%.2f,area=%.2f\n",m,area);
        }
        else
            printf("a=%.2f,b=%.2f,c=%.2f\n",a,b,c);
    }
    return 0;
}