C - Format input string to integer variables [duplicate]

Question

I have a string that looks like "%i|%i". Some examples: "52|23" , "7|3" , "98|6".

I want to parse this kind of strings to two int variables. so "52|23" will become a variable. int a=52 and int b=23.

These strings are saved in a .txt-file. How can I parse them out and parse them like explained above?

nneonneo · Accepted Answer · 2015-10-14 22:29:50Z

0

Just use fscanf:

FILE *f = fopen("file.txt", "r");
if(!f) {
    /* file open failed */
}
int a, b;
while(fscanf(f, "%i|%i", &a, &b) == 2) {
    /* do something with a and b */
}

answered Oct 14, 2015 at 22:29

nneonneo

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1 Comment

Domien Over a year ago

Awesome . Didn't know about this method lol. Btw, what happens if the string does not match with the pattern?

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