C语言代码分享之字符串匹配及文件读写结合
这个代码功能是：有一个密码验证功能（这里没有做回显操作，即用*代替输入的内容），验证通过后从执行的参数个数来判定要输出的内容，如果参数是程序本身，则输出文本里面的命令内容，如果参数带了，那么则与文本内容匹配，如果匹配成功，则执行这个命令，如果不成功则输出没有找到该命令。直接上代码了：
[cpp]
/*
* =====================================================================================
*
* Filename: main.cpp
*
* Description:
*
* Version: 1.0
* Created: 03/12/2013 05:44:05 PM
* Revision: none
* Compiler: gcc
*
* Author: BackGarden_Straw.Neo (BackGarden_Straw), 20549304@163.com
* Organization: BackGarden_Straw
*
* =====================================================================================
*/
//define the header file
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
//define the marco var
#define SIZE 1024
int main(int argc, const char *argv[]){
//input the test login in executable program.
char Password[] = {"test"};
char LoginPassword[16];
do {
printf("please input password to login:");
scanf("%s",LoginPassword);
//printf("1=%d,2=%d,3=%d\n",strcmp(Password,LoginPassword),strlen(Password),strlen(LoginPassword));
//printf("1=%d,2=%d,3=%d\n",strcmp(Password,LoginPassword),strlen(Password),strlen(LoginPassword));
if ( (strcmp(Password,LoginPassword) == 0) &&
(strlen(Password) == strlen(LoginPassword))){
printf("Enjoy it!\n");
break;
}else{
printf("your password can't login.\n");
exit(0);
}
} while (1);
//do what after login
FILE *source;
const char CommandPath[] = {"command.txt"};
char Buffer[SIZE];
int status = 0;
if (!(source = fopen(CommandPath,"r"))){
printf("command file can't read or not exist.\n");
exit(1);
}
//List the commands or execute the command
if (argc < 2){ //List the commands
printf("Command List:\n");
while (fgets(Buffer,sizeof(Buffer),source)){
printf("%s",Buffer);
}
}else{ //Check the command
while (fgets(Buffer,sizeof(Buffer),source)){
if (strncmp(argv[1],Buffer,strlen(Buffer)-1) == 0){
printf("find the command.\n");
status = 1;
//send the command to services
char ReceiveCommand[SIZE];
int i = 0;
for (i = 1; i < argc; i++){
strcat(ReceiveCommand,argv[i]);
strcat(ReceiveCommand," ");
}
printf("the command is:%s\n",ReceiveCommand);
break;
}else{
continue;
}
}
if (status == 0){
printf("sorry,can't find your command\n");
}
}
//close the command file
if (fclose(source)){
printf("Error in close file");
exit(1);
}
return 0;
}
代码量不大，注释就不多写了。
ps:执行时需要在同级目录下有一个command.txt
补充：软件开发 , C语言 ,
