How to take check duplicacy at the time of insertion of string

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basically i want to create a structure in C in which i am going to take 50 inputs of

1.country Name
2.Player name
3.batting average

and the printing of these 50 inputs should be like that no player name should be similar in same country.
e.g

India
Nikhil

possible case.

Australia
Nikhil

possible case.

again

India 
Nikhil

not possible case.

What I have tried:

C

#include <stdio.h>
#include <stdlib.h>
struct cricket
{
    char country_name[50];
    char player_name[50];
    int batting_average[50];
};
int compare_string(char[],char[]);



int main()
{
    int i=0;
    struct cricket t;
    int flag;

        printf("enter the player name\n");
        gets(t.player_name);
        printf("Enter country name\n");
        gets(t.country_name);
        printf("enter the batting average\n");
        gets(t.batting_average);
        flag=compare_string(player_name,country_name);

    int compare_string(char[],char[])
    {

            while(player_name[c]==country_name[c])
           {
               if(player_name[c]=='\0'||country_name[c]=='\0')
               break;
               c++;

           }
    }
     if(player_name[c]=='\0'&&country_name[c]=='\0')
        return 0;
    else
        return -1;

Posted 9-Mar-17 3:05am

nikhil arora

Updated 9-Mar-17 3:34am

CPallini

v2

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Comments

CHill60 9-Mar-17 9:13am

What is your actual problem? (Apart from the fact your code won't compile)

2 solutions

Solution 2

I suggest you to profitably use the C library function strncmp[^]. Try for instance

C

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


struct cricket
{
    char country_name[50];
    char player_name[50];
    int batting_average[50];
};

// returns 0 if the names match
int comp_cricket_names(struct cricket * pc1, struct cricket * pc2)
{
  int c = strncmp( pc1->country_name, pc2->country_name, sizeof(pc1->country_name));
  if ( c == 0 )
   c = strncmp( pc1->player_name, pc2->player_name, sizeof(pc1->player_name));

  return c;
}

int main()
{
  struct cricket ck[3];

  strcpy(ck[0].country_name, "India");
  strcpy(ck[0].player_name, "Nikhil");

  strcpy(ck[1].country_name, "Australia");
  strcpy(ck[1].player_name, "Nikhil");

  strcpy(ck[2].country_name, "India");
  strcpy(ck[2].player_name, "Nikhil");


  int i;
  for (i=0; i<2; ++i)
  {
    int j;
    for (j=i+1; j<3; ++j)
    {
      if ( comp_cricket_names(&ck[i], &ck[j]) )
        printf("team %d and %d have different names\n", i, j);
      else
        printf("team %d and %d have same names\n", i, j);
    }
  }
  return 0;
}

Posted 9-Mar-17 3:34am

CPallini

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Jochen Arndt · Accepted Answer · 2017-03-09T03:17:00

Solution 1

There is a C standard library function to compare strings: strcmp - C++ Reference[^].

But your actual code is far away from a solution to your assignment. You would need an array of your struct cricket and an integer variable that indicates how many array entries are containing data. Then iterate over the array items containing data and check if new country and user name are identical to the values from the array item.

Posted 9-Mar-17 3:17am

Jochen Arndt

Comments

nikhil arora 9-Mar-17 9:30am

can you show me through some e.g that how should i proceed to solve this problem?

Jochen Arndt 9-Mar-17 9:43am

See the below solution by CPallini.