标签:style blog color 文件 for line
头文件1
#include <stdio.h> double mean( double *y, int N ) { int i; double s = 0.0; for ( i = 0; i < N; i++ ) s = s + y[i]; s = s / (double) N; return(s); } void main() { double x[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }; printf( "mean = %lf\n", mean( x, 10 ) ); }
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抽出部分 存入 a_x.h :
double mean( double *y, int N ) { int i; double s = 0.0; for ( i = 0; i < N; i++ ) s = s + y[i]; s = s / (double) N; return(s); }
程序变:
#include <stdio.h> #include "a_x.h" void main() { double x[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }; printf( "mean = %lf\n", mean( x, 10 ) ); }
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你要是愿意随便抽一块也可以,例如抽出(也叫 a_x.h):
double mean( double *y, int N ) { int i; double s = 0.0; for ( i = 0; i < N; i++ ) s = s + y[i]; s = s / (double) N; return(s); } void main() {
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程序变:
#include<stdio.h> #include "a_x.h" double x[10]={1,2,3,4,5,6,7,8,9,10}; printf("mean = %lf\n", mean(x,10)); }
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语法上,功能上,两种抽法都可以。但第一种方法较好--程序可读性好,不易出错。
一般情况下,头文件里放 函数原型,全局量声明 和 函数定义。
标签:style blog color 文件 for line
原文地址:http://www.cnblogs.com/mjorcen/p/3817406.html