满意答案

zrc28

2013.07.24

采纳率：59%    等级：12

已帮助：6548人

argc与argv[]是启动C程序时系统传入的，可以直接使用。argc是参数数量，argv是参数表数组。如命令行为“prg.exe 1 2 3”，则argc为4，argv[0]="prg.exe",argv[1]="1",argv[2]="2",argv[3]="3"。以下是LCC-WIN32模板文件(加了一行显示所有参数语句)：

/* --- The following code comes from e:\\lcc\\lib\\wizard\\textmode.tpl. */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

void Usage(char *programName)

{

fprintf(stderr,"%s usage:\

",programName);

/* Modify here to add your usage message when the program is

* called without arguments */

}

/* returns the index of the first argument that is not an option; i.e.

does not start with a dash or a slash

*/

int HandleOptions(int argc,char *argv[])

{

int i,firstnonoption=0;

for (i=1; i< argc;i++) {

if (argv[i][0] == '/' || argv[i][0] == '-') {

switch (argv[i][1]) {

/* An argument -? means help is requested */

case '?':

Usage(argv[0]);

break;

case 'h':

case 'H':

if (!stricmp(argv[i]+1,"help")) {

Usage(argv[0]);

break;

}

/* If the option -h means anything else

* in your application add code here

* Note: this falls through to the default

* to print an "unknow option" message

*/

/* add your option switches here */

default:

fprintf(stderr,"unknown option %s\

",argv[i]);

break;

}

}

else {

firstnonoption = i;

break;

}

}

return firstnonoption;

}

int main(int argc,char *argv[])

{

if (argc == 1) {

/* If no arguments we call the Usage routine and exit */

Usage(argv[0]);

return 1;

}

/* handle the program options */

HandleOptions(argc,argv);

/* The code of your application goes here */

for (int i=0;i<argc;i++)printf("%s ",argv[i]);

return 0;

}

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