返回和C印花字符串数组索引 [英] Returning and printing string array index in C

问题描述

我已经得到了通过名称列表搜索功能，我试图让搜索函数返回数组的索引回主函数，并打印出找到的名称的起始位置。我已经试过了这一点无论是一切都在崩溃怪输出的程序或结果。

I've got a function that searches through a list of names and I'm trying to get the search function to return the index of the array back to the main function and print out the starting location of the name found. Everything I've tried up to this point either crashes the program or results in strange output.

下面是我的搜索功能：

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

#define MAX_NAMELENGTH 10
#define MAX_NAMES 5

void initialize(char names[MAX_NAMES][MAX_NAMELENGTH], int Number_entrys, int i);
int search(char names[MAX_NAMES][MAX_NAMELENGTH], int Number_entrys);

int main()
{
   char names[MAX_NAMES][MAX_NAMELENGTH];
   int i, Number_entrys,search_result,x;
   printf("How many names would you like to enter to the list?\n");
   scanf("%d",&Number_entrys);
   initialize(names,Number_entrys,i);
   search_result= search(names,Number_entrys);
   if (search_result==-1){
      printf("Found no names.\n");
   }else
   {
      printf("%s",search_result);
   }
   getch();
   return 0;
}

void initialize(char names[MAX_NAMES][MAX_NAMELENGTH],int Number_entrys,int i)
{
   if(Number_entrys>MAX_NAMES){
      printf("Please choose a smaller entry\n");
   }else{
      for (i=0; i<Number_entrys;i++){
         scanf("%s",names[i]);
      }
   }
}

int search(char names[MAX_NAMES][MAX_NAMELENGTH],int Number_entrys)
{
   int x;
   char new_name[MAX_NAMELENGTH];
   printf("Now enter a name in which you would like to search the list for\n");
   scanf("%s",new_name);

   for(x = 0; x < Number_entrys; x++) {
      if ( strcmp( new_name, names[x] ) == 0 )
      {
         return x;
      }
   } 
   return -1;        
}

就像我之前提到的我已经尝试了很多不同的方式，试图解决这个问题，但我似乎无法让他们的工作。打印点¯x如我以上仅仅是过去的事情我试过了，并为此知道这是行不通的。在最简单的方法有什么建议这样做？

Like I mentioned before I have tried a lot of different ways to try and fix this issue, but I cant seem to get them to work. Printing X like what I have above is just the last thing I tried, and therefor know that it doesn't work. Any suggestions on the simplest way to do this?

推荐答案

你为什么不使用的strcmp代替的strstr？

Why don't you use strcmp instead of strstr ?

在您的code似乎有一些巨大的问题：
- 它似乎是我不使用初始化。
- 你x声明为int和运行：printf的（％S，X）它是一种非意识在这里。顺便说一句不initiliaze！

In your code it seems that there is some huge issues : -it seems that i is use not initialize. -You declare x as a int and then use : printf("%s",x) it's kind of a non-sense here. And by the way not initiliaze !

类似的东西应该会更好（请注意，我不是你的初始化函数），我还没有尝试编译：

Something like that should be better (Do note that I haven't your initialize function) and I haven't try to compile :

int search(char names[MAX_NAMES][MAX_NAMELENGTH],int Number_entrys)
{
   int x =0;
   char new_name[MAX_NAMELENGTH];
   printf("Now enter a name in which you would like to search the list for\n");
   scanf("%s",new_name);

   for(x = 0; x < Number_entrys; x++) 
   {
      if ( strcmp( new_name, names[x] ) == 0 )
      {
         return x;
      }
   } 
   return -1;        
 }

MAIN：

int main()
{
    char names[MAX_NAMES][MAX_NAMELENGTH];
    int i=0;
    int Number_entrys=0;
    int search_result=0;
    printf("How many names would you like to enter to the list?\n");
    scanf("%d",&Number_entrys);
    initialize(names,Number_entrys,i); // I guess it is use to initialize names ?!?
    search_result= search(names,Number_entrys);
    if (search_result==-1)
    {
         printf("Found no names.\n");
    }
    else
    {
       printf("Index found in position %d in the tab\n",search_result);
    }
   getch(); //not really a fan of this...
   return 0;
 }

希望它帮助。

问候，

JOZE

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