Searching in array of struct in C

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I'm asking how can I search on char if it is found in array of struct or not .

What I have tried:

#include <stdio.h>
#include <stdlib.h>
#include<string.h>
#define InfoSize  3 

int main(int argc, char *argv[]) 
{  
char arr[20];
struct st
{    
    char name[20];  
      
}; 

struct st info[InfoSize] = {{ "sl" },{"sos"},{"ss"}};

         
         char s = 'ss';


  for(int j=0;j<3;j++){

     if(info[j].name == s )
     printf("found  %s  ",info[j].name);

}

Posted 25-Dec-17 6:07am

Lilyanaa

Updated 25-Dec-17 21:49pm

v3

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Comments

Richard MacCutchan 26-Dec-17 3:03am

This will not even compile. You have declared s as a character, and then tried to put two characters in the constant. And you then try to compare an array with a character. You need to learn the basics of C character handling.

2 solutions

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KarstenK · Answer 1 · 2017-12-25T07:42:00

it very easy pointer arithmetics:

C++

struct st *pointer = &info[0];//getting pointer to address of first struct
char c = 'a';//search char
int pos = -1;//external scope of var
for( pos = 0; pos < 50/*size of name*/; pos++ ) {
 if( pointer->name[pos] == c )//check 
   break;
}

Consider learning C with some tutorials.

Nakhia_ind · Answer 2 · 2017-12-25T21:49:00

Solution 2

char[2] s = "ss";


for(int j=0;j<3;j++){

   if(strcmp(info[j].name, s) == 0 )
   printf("found  %s  ",info[j].name);

Posted 25-Dec-17 21:49pm

Nakhia_ind

Comments

jeron1 26-Dec-17 13:44pm

's' should have a size of 3, to account for the null terminator.