CODEWITHSUNDEEP
c
kris
kris

Reputation: 385

Reading both strings and integers from a file

I'm reading in a text file where certain lines begin with an asterisk, then other lines contain numbers indicating the size of a rectangle. I'm very confused on how I should be extracting this information though. I'm initially trying to use fgets() to read the strings and then sscanf to read the integers, as seen;

   while(fgets(line, MAX_CHARS, infile) != NULL) {
        if(line[0] == '*') {
            printf("%s\n", line);
        }
        sscanf(line, "%d%d", &height, &width);
        printf("height: %d, width: %d\n", height, width);
    }

but it's printing like this;

*Case #1

height: 0, width: 0

height: 10, width: 20

....

*Case #2: Shape

height: 10, width: 20

height: 7, width: 7

....

Should I be reading this file character by character instead?

Sample input: (the height and width aren't updated right away)

 *Case #1
 10 20



   X            
    X           
  XXX           




 *Case #2: Shape
  7 7


    XX  
   XX   
    X

Upvotes: 0

Views: 106

Answers (1)

R Sahu
R Sahu

Reputation: 206577

You forgot to add the else part after the if.

while(fgets(line, MAX_CHARS, infile) != NULL) {
    if(line[0] == '*') {
        printf("%s\n", line);
    }
    // Missing piece
    else {
       sscanf(line, "%d%d", &height, &width);
       printf("height: %d, width: %d\n", height, width);
    }
}

Upvotes: 1

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