C Interview Questions and Answers

 

Why doesnt this code work?

Why doesn't this code:



double d;



scanf("%f", &d);



work?





Unlike printf, scanf uses %lf for values of type double, and %f for float.%f tells
scanf to expect a pointer-to-float, not the pointer-to-double you gave it. Either
use %lf, or declare the receiving variable as a float.

Posted by:Richards