Question

C programming.

If I scanf in some values from a user do I need to do this first

int a=0;
scanf("%d",&a);

or can I just not set it equal to zero like this.



int a;
scanf("%d",&a);

Answer 1

Many programmers get into the habit of setting a variable's value as soon as it's declared so there's no chance that it has a garbage value. As long as the first thing that is done with a variable is assignment, life is good. The more code between declaration and actual use, the better the chance that this could be forgotten.

Answer 2

yes. Like @rsmith6559 said. you set it, it takes a couple of "bytes" more. if you do not set it, you save a couple of bytes. Program size wise, it dont make no difference

Answer 3

so i should do int a=0; instead of just int a; right

Answer 4

yea. if you didnt, it'd be no biggie.

Answer 5

Thanks.