Discussion
What will be the output of the program?
#include <stdio.h>
int main()
{
int x = 3;
float y = 3.0;
if(x == y)
printf("x and y are equal");
else
printf("x and y are not equal");
return 0;
}
Answer: A
Correct answer: x and y are equal
When an int and a float are compared, the int is converted to floating point first. Both values are then exactly 3.0 - and 3 is one of the values a float can represent exactly - so the comparison succeeds. It is only fractional values such as 0.1 that make such comparisons unreliable.
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