Jump statement overview in C++ - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

Output of break in nested loops

What is the output of this C++ code snippet?

C++

#include <iostream>
int main() {
    for (int i = 1; i <= 3; ++i) {
        for (int j = 1; j <= 3; ++j) {
            if (j == 2) break;
            std::cout << i << j << " ";
        }
    }
    return 0;
}

A 11 21 31

B 11 21 31 32

C 11 12 13 21 22 23 31 32 33

D 11 12 21 22 31 32

💡 Hint

The break statement exits the inner loop when j equals 2.

The inner loop prints when j=1, then breaks when j=2, so only '11', '21', and '31' are printed.

❓ Predict Output

intermediate

Effect of continue in a for loop

What will this C++ code print?

C++

#include <iostream>
int main() {
    for (int i = 1; i <= 5; ++i) {
        if (i % 2 == 0) continue;
        std::cout << i << " ";
    }
    return 0;
}

A 1 2 3 4 5

B 2 4

C 1 3 5

D 1 3 4 5

💡 Hint

Continue skips the rest of the loop body for even numbers.

The continue statement skips printing when i is even, so only odd numbers 1, 3, and 5 are printed.

❓ Predict Output

advanced

Output of goto with label

What is the output of this C++ program?

C++

#include <iostream>
int main() {
    int count = 0;
    start:
    std::cout << count << " ";
    count++;
    if (count < 3) goto start;
    return 0;
}

A 1 2 3

B 0 1 2 3

C 0 1

D 0 1 2

💡 Hint

The goto jumps back to the label until count reaches 3.

The code prints count starting at 0, increments, and loops until count is 3, printing 0 1 2.

❓ Predict Output

advanced

Value of variable after nested continue

What is the value of variable x after running this code?

C++

#include <iostream>
int main() {
    int x = 0;
    for (int i = 0; i < 3; ++i) {
        for (int j = 0; j < 3; ++j) {
            if (j == 1) continue;
            x += 1;
        }
    }
    std::cout << x;
    return 0;
}

A 3

B 6

C 9

D 0

💡 Hint

Continue skips increment when j equals 1.

Inner loop runs 3 times per outer loop, but skips when j=1, so increments x twice per outer loop iteration. 3 * 2 = 6.

❓ Predict Output

expert

Output of switch with break and fallthrough

What is the output of this C++ code?

C++

#include <iostream>
int main() {
    int n = 2;
    switch (n) {
        case 1:
            std::cout << "One ";
            break;
        case 2:
            std::cout << "Two ";
        case 3:
            std::cout << "Three ";
            break;
        default:
            std::cout << "Default ";
    }
    return 0;
}

A Two Three

B Two

C Three

D Default

💡 Hint

Without break after case 2, execution falls through to case 3.

Case 2 prints "Two ", then falls through to case 3 and prints "Three ". Then break stops further execution.