在文件中搜索字符串

Question

我必須搜索文件以查找輸入的字符串，但下面的代碼不起作用。它總是說「無法在字典中查找的文件（稱爲Dictionary.txt）的內容如下：

pow 
jaw 
pa$$word 

的代碼是：

#include <stdio.h> 
#include <stdlib.h> 
#include <string.h> 

#define MAX 30 

main() 
{ 
    char inPassword[MAX + 1]; 
    printf("\nEnter a password: "); 
    gets(inPassword); 

    printf("\n\nYou entered: %s, please wait, checking in dictionary.\n\n",inPassword); 
    checkWordInFile("Dictionary.txt",inPassword); 

    printf("\n\n\n"); 
    system("pause"); 
}//end of main 


void checkWordInFile(char *fileName, char *password); 
{ 
    char readString[MAX + 1]; 
    FILE *fPtr; 
    int iFound = -1; 
    //open the file 
    fPtr = fopen(fileName, "r"); 

    if (fPtr == NULL) 
    { 
     printf("\nNo dictionary file\n"); 
     printf("\n\n\n"); 
     system("pause"); 
     exit(0); // just exit the program 
    } 


    while(fgets(readString, MAX, fPtr)) 
    { 
      if(strcmp(password, readString) == 0) 
     { 
      iFound = 1; 
     } 

    } 

    fclose(fPtr); 

    if(iFound > 0) 
    { 
     printf("\nFound your word in the dictionary"); 
    } 
    else 
    { 
     printf("\nCould not find your word in the dictionary"); 
    } 


} 

Answer 1

與fgets（）離開\ n 。在弦上，除非EOF結束這種修復它：

while(fgets(readString, MAX, fPtr)) 
{ 
    size_t ln = strlen(readString); 
    if (ln && readString[ln-1] == '\n') { readString[ln-1] = 0; --ln; } 
    if(ln && strcmp(password, readString) == 0) 
    { 
     iFound = 1; 
    } 

} 

Answer 2

我將如何改變這個功能來搜索一個字符串，這個文件中包含例如如果我輸入一個單詞「repow234」我應該得到的消息？日這是不正確怎麼一回事，因爲「POW」是該文件，並不能用於

這不起作用：

while(fgets(readString, MAX, fPtr)) 
{ 
    if (strstr(password, readString) != NULL) 
    { 
     iFound = 1; 
    } 
} 

fclose(fPtr); 

if(iFound > 0) 
{ 
    printf("\nThis password cannot be used because it contains the word in the dictionary"); 
} 
else 
{ 
    printf("\nThis password can be used"); 
}