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37 lines
713 B
Markdown
37 lines
713 B
Markdown
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# 6-3 求两数平方根之和
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函数fun的功能是:求两数平方根之和,作为函数值返回。例如:输入12和20,输出结果是:y = 7.936238。
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### 函数接口定义:
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```c++
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double fun (double *a, double *b);
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```
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其中 `a `和 `b `是用户传入的参数。函数求 `a `指针和` b` 指针所指的两个数的平方根之和,并返回和。
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### 裁判测试程序样例:
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```c++
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#include<stdio.h>
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#include <math.h>
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double fun (double *a, double *b);
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int main ( )
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{ double a, b, y;
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scanf ("%lf%lf", &a, &b );
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y=fun(&a, &b); printf ("y=%.2f\n", y );
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return 0;
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}
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/* 请在这里填写答案 */
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```
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### 输入样例:
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```in
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12 20
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```
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### 输出样例:
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```out
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y=7.94
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```
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