Avatto > UGC NET COMPUTER SCIENCE > PRACTICE QUESTIONS > Programming Languages and Computer Graphics > Programming in C > Find the Output

Programming in C MCQ - Find the Output

21 Find the output of the following C code (assume #include <stdio.h> and that the code is inside int main(void)):

int i, j, sum = 0;
for (i = 1, j = 9; i < j; i += 2, j -= 2) {
    sum += i * j;
    printf("%d ", sum);
}

The two successful pairs are (1,9) and (3,7), producing cumulative sums 9 and 30. At (5,5), the condition fails.

22 Find the output of the following C code (assume #include <stdio.h> and that the code is inside int main(void)):

int i, count = 0;
for (i = 1; i <= 15; i++) {
    if (i % 3 == 0)
        i += 2;
    count++;
}
printf("%d %d", count, i);

The iteration starts occur at i = 1, 2, 3, 6, 9, 12, 15. Multiples of three receive two extra increments, and the final for update leaves i = 18.

23 Find the output of the following C code (assume #include <stdio.h> and that the code is inside int main(void)):

int i, j, count = 0;
for (i = 1; i <= 4; i++) {
    for (j = i; j <= 4; j++)
        count += j - i;
}
printf("%d", count);

The outer iterations add 6, 3, 1, and 0, giving 10.

24 Find the output of the following C code (assume #include <stdio.h> and that the code is inside int main(void)):

int i, j, count = 0;
for (i = 1; i <= 4; i++) {
    for (j = 1; j <= 4; j++) {
        if (i + j > 5)
            break;
        count++;
    }
}
printf("%d", count);

The inner loop contributes 4, 3, 2, and 1 successful iterations; break does not exit the outer loop.

25 Find the output of the following C code (assume #include <stdio.h> and that the code is inside int main(void)):

int i, j, sum = 0;
for (i = 1; i <= 3; i++) {
    for (j = 1; j <= 4; j++) {
        if ((i + j) % 2 == 0)
            continue;
        sum += i * j;
    }
}
printf("%d", sum);

Only odd i+j pairs contribute: 6 for i=1, 8 for i=2, and 18 for i=3, totaling 32.

Your Progress

Start Practising!

You've answered 0 of 50 questions in this topic.

Practice Spotlight

Build momentum in Find the Output

Start with a short question set, review every explanation, and revisit difficult questions before moving ahead.

Day 4 / 10

Global Spotlight

Build Your First Streak

Complete one short Find the Output session today, then return tomorrow. Consistency matters more than a long first session.

Day 7 / 10

Question Spotlight

Question:

Find the output of the following C code (assume #include <stdio.h> and that the code is inside int main(void)):int i, j, sum = 0; for (i = 1;…

A. 24
B. 30
C. 32
D. 40

Correct answer: C

Explanation:

Only odd i+j pairs contribute: 6 for i=1, 8 for i=2, and 18 for i=3, totaling 32.

Click to view the complete question details

Day 4 / 10 Open this question

Question

Find the output of the following C code (assume #include <stdio.h> and that the code is inside int main(void)):

int i, j, sum = 0;
for (i = 1; i <= 3; i++) {
    for (j = 1; j <= 4; j++) {
        if ((i + j) % 2 == 0)
            continue;
        sum += i * j;
    }
}
printf("%d", sum);

Community Insight

Based on 300 saved attempts

Most Attempted TopicConstants, Variables and Data Types
Most Challenging TopicArays
Average Accuracy94%