设计一个函数void sear(int a[], int n);n为数组a的长代码,C代码库,德仔网

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【C】设计一个函数void sear(int a[], int n);n为数组a的长

作者:Dezai.CN / 发布于2011/7/8/ 779

设计一个函数void sear(int a[], int n);n为数组a的长度。通过使用全局变量的方法求：tave(数组a中正数的平均值)，nave(数组a中负数的平均值)

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<div><span style="color: #008000">//</span><span style="color: #008000">程序5：设计一个函数void sear(int a[], int n);n为数组a的长度。 通过使用全局变量的方法求：tave(数组a中正数的平均值)，nave(数组a中负数的平均值)</span><span style="color: #008000">
</span><span style="color: #000000">
#include </span><span style="color: #000000"><</span><span style="color: #000000">stdio.h</span><span style="color: #000000">></span><span style="color: #000000">

</span><span style="color: #0000ff">int</span><span style="color: #000000"> tave</span><span style="color: #000000">=</span><span style="color: #800080">0</span><span style="color: #000000">,nave</span><span style="color: #000000">=</span><span style="color: #800080">0</span><span style="color: #000000">;

</span><span style="color: #0000ff">void</span><span style="color: #000000"> sear(</span><span style="color: #0000ff">int</span><span style="color: #000000"> a[], </span><span style="color: #0000ff">int</span><span style="color: #000000"> n)
{
 </span><span style="color: #0000ff">int</span><span style="color: #000000"> i;
 </span><span style="color: #0000ff">int</span><span style="color: #000000"> tsum</span><span style="color: #000000">=</span><span style="color: #800080">0</span><span style="color: #000000">,t_n</span><span style="color: #000000">=</span><span style="color: #800080">0</span><span style="color: #000000">,nsum</span><span style="color: #000000">=</span><span style="color: #800080">0</span><span style="color: #000000">,n_n</span><span style="color: #000000">=</span><span style="color: #800080">0</span><span style="color: #000000">;
 </span><span style="color: #0000ff">for</span><span style="color: #000000"> (i</span><span style="color: #000000">=</span><span style="color: #800080">0</span><span style="color: #000000">; i</span><span style="color: #000000"><</span><span style="color: #000000">n;i</span><span style="color: #000000">++</span><span style="color: #000000">)
 {
 </span><span style="color: #0000ff">if</span><span style="color: #000000"> (a[i]</span><span style="color: #000000">></span><span style="color: #800080">0</span><span style="color: #000000">)
 {
 tsum </span><span style="color: #000000">+=</span><span style="color: #000000"> a[i];
 t_n</span><span style="color: #000000">++</span><span style="color: #000000">;
 }
 </span><span style="color: #0000ff">else</span><span style="color: #000000">
 {
 nsum </span><span style="color: #000000">+=</span><span style="color: #000000"> a[i];
 n_n</span><span style="color: #000000">++</span><span style="color: #000000">;
 }
 }
 </span><span style="color: #0000ff">if</span><span style="color: #000000"> (t_n</span><span style="color: #000000">!=</span><span style="color: #800080">0</span><span style="color: #000000">) tave</span><span style="color: #000000">=</span><span style="color: #000000">tsum</span><span style="color: #000000">/</span><span style="color: #000000">t_n;
 </span><span style="color: #0000ff">if</span><span style="color: #000000"> (n_n</span><span style="color: #000000">!=</span><span style="color: #800080">0</span><span style="color: #000000">) nave</span><span style="color: #000000">=</span><span style="color: #000000">nsum</span><span style="color: #000000">/</span><span style="color: #000000">n_n;
}

</span><span style="color: #0000ff">int</span><span style="color: #000000"> main()
{
 </span><span style="color: #0000ff">int</span><span style="color: #000000"> a[</span><span style="color: #800080">10</span><span style="color: #000000">];
 </span><span style="color: #0000ff">int</span><span style="color: #000000"> i;
 printf(</span><span style="color: #800000">"</span><span style="color: #800000">输入数据\n</span><span style="color: #800000">"</span><span style="color: #000000">);
 </span><span style="color: #0000ff">for</span><span style="color: #000000"> (i</span><span style="color: #000000">=</span><span style="color: #800080">0</span><span style="color: #000000">; i</span><span style="color: #000000"><</span><span style="color: #800080">10</span><span style="color: #000000">; i</span><span style="color: #000000">++</span><span style="color: #000000">)
 {
 printf(</span><span style="color: #800000">"</span><span style="color: #800000">a[%d]=</span><span style="color: #800000">"</span><span style="color: #000000">,i);
 scanf(</span><span style="color: #800000">"</span><span style="color: #800000">%d</span><span style="color: #800000">"</span><span style="color: #000000">, </span><span style="color: #000000">&</span><span style="color: #000000">a[i]);
 }
 sear(a,</span><span style="color: #800080">10</span><span style="color: #000000">);
 printf(</span><span style="color: #800000">"</span><span style="color: #800000">结果： \n tave=%d \n nave=%d \n</span><span style="color: #800000">"</span><span style="color: #000000">,tave,nave);
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> </span><span style="color: #800080">1</span><span style="color: #000000">;
}</span></div>
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　设计一个函数void　　sear(int　　a[],　　int　　n);n为数组a的长　

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