CODEWITHSUNDEEP
c
John
John

Reputation: 49

How to split a line of text at delimiters

Here is my code. This currently opens a text file and prints a certain line depending on user input. I would like now to separate said line at appearances of a chosen delimiter (such as a comma) so I can get separate pieces of information (for example, weight, height, eye color, Name, Age, etc.). How would I go about doing that?(Edit im trying to use text input to determine the line printed out and nada any help?)

     #include<stdio.h>
#include <string.h>
#include <stdlib.h>
    int main()
    {
            const char delim[2] = ",";
            char *token;
            int j =0;
            char  hh[3];
            FILE *ptr_file;
            char buf[1000];
            ptr_file =fopen("input.txt","r");
            if (!ptr_file)
            return 1;
            char *pt[] = {
                "H","He","Li","Be","B","C","N","O","F","Ne","Na"

            };
    printf("what element do you want\n");
    scanf("%s", &hh);
    for(j=0; j<= 3; j++)
    {
        if(hh == pt[j])
      {
        fgets(buf,1000, ptr_file);
                token = strtok(buf, delim);
                while( token != NULL ) 
                {
                printf( "%s\n", token );
                token = strtok(NULL, delim);
                }

                break;
      }else     
        {
            fgets(buf,1000, ptr_file);
            continue;
        }
    }    
       fclose(ptr_file);
            return 0;
    }

Upvotes: 0

Views: 758

Answers (1)

Sterls
Sterls

Reputation: 761

If you have your sentence: "Weight,Height,Eye color,Name,Age", you can tokenize the string and separate it by the comma (",") by using the

char *strtok(char *str, const char *delim) function as follows.

char buf[1000] = "Weight,Height,Eye color,Name,Age";
const char delim[2] = ",";
char *token;

//This retrieves the first token
token = strtok(buf, delim);

while( token != NULL ) 
{
  printf( "%s\n", token );
  token = strtok(NULL, delim);
}

Output:
Weight
Height
Eye color
Name
Age

Upvotes: 1

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