UGC NET Computer Science December 2019 | Question 64

Question 64

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What is the output of following C program?
# include <stdio.h>
main( )
{
int i, j, x = 0 ;
for ( i= 0; i < 5; ++i )
for ( j = 0; j < i ; ++j ){
x += (i + j - 1);
break ;
}
printf ( "%d" , x );

1. 1. 6
2. 2. 5
3. 3. 4
4. 4. 3

Explanation

Inner for loop will not execute while i = 0, as j < i condition is not met.

Break statement restricts inner-for-loop to execute only once for all value of i > 0

Inner for loop value j initializes to 0 every time.

i	j	(i+j-1)	value of x
0	0	inner loop not execute as j is not less than i	0
1	0	(1 + 0 - 1) = 0	0
2	0	(2 + 0 - 1) = 1	1
3	0	(3 + 0 - 1) = 2	3
4	0	(4 + 0 - 1) = 3	6

So, option 1 is correct answer

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