GATE 2019 CS – Question 62
Consider the following C program:
#include <stdio.h>
int main(){
float sum = 0.0, j = 1.0, i = 2.0;
while (i/j > 0.0625){
j = j + j;
sum = sum + i/j;
printf("%f\n", sum);
}
return 0;
}The number of times the variable sum will be printed, when the above program is executed, is ________.
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Show answer and explanation
Correct answer: 5
Explanation
Before each iteration the test is $\frac{2}{j}>0.0625$, i.e. $j<32$. The value of $j$ is 1, 2, 4, 8, 16 at the start of the five iterations that run, and then $j$ becomes 32 and the loop stops. So `sum` is printed 5 times.