uman.c

多用户银行系统

/******************************************/
/*       used for manage pwdfile          */
/*   -a : add user                        */
/*   -d : del user                        */
/*   -m : modefy                         */
/*   -help                                */
/******************************************/

#include <stdio.h>

#include "../include/structs.h"
#include "../include/stddef.h"
#include "../include/structs.h"

void add();
void delete();
void modefy();
void search();
void look();
void help();
int getStr();

USER user;
FILE *fp;

int
main(int argc , char **argv){

	if(argc < 2){
		printf("too few paras !\n");	
		exit(1);
	}

	fp = fopen(PWDFILE , "r+");
	if( strcmp(argv[1] , "-a") == 0){
		add();
		return 0;	
	}if(strcmp(argv[1] , "-d") == 0){
		delete();
		return 0;
	}if(strcmp(argv[1] , "-m") == 0){
		modefy();
		return 0;
	}if(strcmp(argv[1] , "-help") == 0){
		help();
		return 0;
	}if(strcmp(argv[1] , "-s") == 0){
		search();
		return 0;	
	}if(strcmp(argv[1] , "-l") == 0){
		look();
		return 0;	
	}
	printf("wrong para !\n");
	exit(1);
	
return 0;}

void add(){
	extern FILE *fp ;
	extern USER user;
	printf("add user ..\nName : ");
	getStr(user.name , 10);
	printf("Passwd : ");
	getStr(user.pwd , 10);
	
	printf("name : %s\npwd : %s\n" , user.name , user.pwd);

	fseek(fp , 0 , SEEK_END);
	fwrite(&user , sizeof user , 1 , fp);
};

void search(){
	printf("  name	passwd\n");
	while(fread(&user , sizeof user , 1 , fp)){
		printf(" %s 	 %s\n" , user.name , user.pwd);	
	}
};
void delete(){};
void modefy(){};
void look(){};
void help(){};

int getStr(char *str , int max){
	
	char *s;
	char c;
	int i = 0;
	
	s = str;
	
	while(1){
		c = getchar();
		if(c != '\n' && i < (max - 1)){
			*s ++ = c;
			i ++;
			continue;	
		}else{
			if(c == '\n')break;
			else continue;	
		}	
		*s = '\0';
	}	
	return 1;
};