CODEWITHSUNDEEP
cscanf
Lotzi11
Lotzi11

Reputation: 549

Trouble with Reading STDIN

I am trying to read in integers through stdin using scanf however when I try to run my code it wants me to type in an integer instead of reading the line.

int x = 0;
int y = 0;
scanf("%d", &x);
while (x != '\n') { 
   y += x;
   scanf("%d", &x);
}

Why won't my code read what's in stdin?

Upvotes: 0

Views: 51

Answers (1)

abligh
abligh

Reputation: 25129

You don't say how it's crashing, but these lines:

scanf("%lld", &x);
while (x != '\n') { 
    ...
}

Will read a long integer into x, then execute the while loop unless the number you entered was 10 (ascii for \n). I'm pretty sure that's not what you wanted, but then it is hard to know what you did want.

Were you trying to loop until no number was input? If so perhaps check the return value from scanf().

Note each call to scanf() is going to read a line.

Upvotes: 1

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