JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech I Year COMPUTER PROGRAMMING Previous Question Paper (July - 2021 - R13)

A palindrome number is a number that remains the same when its digits are reversed. The logic involves extracting each digit using the modulo operator and building the reversed number.

#include <stdio.h>
int main() {
    int n, reversed = 0, remainder, original;
    printf("Enter an integer: ");
    scanf("%d", &n);
    original = n;
    while (n != 0) {
        remainder = n % 10;
        reversed = reversed * 10 + remainder;
        n /= 10;
    }
    if (original == reversed)
        printf("%d is a palindrome.", original);
    else
        printf("%d is not a palindrome.", original);
    return 0;
}

These control flow statements alter the normal execution sequence of a program:

• break: Terminates the nearest enclosing loop or switch statement immediately.
• continue: Skips the remaining statements in the current iteration of a loop and jumps to the next iteration.
• goto: Performs an unconditional jump to a labeled statement within the same function.

#include <stdio.h>
int main() {
    for (int i = 1; i <= 5; i++) {
        if (i == 2) continue; // Skips 2
        if (i == 4) break;    // Exits loop at 4
        printf("%d ", i);
    }
    goto label;
    printf("This will be skipped");
    label: printf("\nJumped to label.");
    return 0;
}