Code Carnival

What will be the output of the following code?

#include<stdio.h>

int main() {

    int x = 3;

    if (x == 3 || x == 2 * 2 && x != 5) {

        printf("Hello\n");

    } else { printf("World\n");

    }

    return 0;

}

• Hello
• World
• Compilation Error
• Hello World

How many times will the loop execute? 

#include<stdio.h>

int main() {

    int i;

    for (i = 1; i <= 6; i++) {

        if (i % 2 == 0) {

            printf("%d ", i++);

        }

    }

   return 0;

}

• 2 4
• 2 3 6
• 2 4 6
• Infinite loop

What will be the output of the following code?

int arr[4] = {1, 2, 3};

printf("%d", arr[3]); 

• 0
• 3
• Garbage value
• Compilation error

Given the following declaration in C:

int arr[5];

float arr2[3];

Which of the following statements correctly calculates the total number of bytes required to store these arrays, considering the typical memory sizes for int and float (assuming int is 4 bytes and float is 4 bytes on your system)?

• sizeof(arr) + sizeof(arr2)
• sizeof(arr) * sizeof(arr2)
• sizeof(arr) + sizeof(arr2)) / 2
• (sizeof(arr) + sizeof(arr2)) - sizeof(int)

What will be the output of the following code?

#include <stdio.h> 

int main() { 

    char str[5] = "Hello"; 

    printf("%s", str); 

    return 0; 

}

• Hello
• Compilation error
• Undefined behavior
• H

What is the output?  

int x = 10;  
switch (x) {  
    case 5: printf("Five");  
    case 10: printf("Ten");  
    case 15: printf("Fifteen");  
}  

• Five
• Ten
• TenFifteen
• Compilation error

Which function is used to find the length of a string?

• strlen()
• sizeof()
• strlength()
• length()

Which of the following loop constructs will result in an infinite loop if the condition is never updated inside the loop body?

• for (int i = 0; i < 10; i--)
• while (x < 10) { x += 2; }
• do { y--; } while (y > 0);
• for (int i = 0; i < 10; i++) { if (i == 5) break; }

What is the output?  

#include <stdio.h>  
int main() {  
    int arr[5] = {1, 3, 5, 7, 9};  

    arr[2] = arr[4] - arr[0];  
    arr[4] = arr[1] + arr[3];  

    for (int i = 0; i < 5; i++) {  
        printf("%d ", arr[i]);  
    }  
    return 0;  
}

• 1 3 5 7 9
• 1 3 8 7 11
• 1 3 8 7 10
• 1 3 4 6 10

Find the output of the following code:  

int arr[] = {1, 2, 3, 4, 5};  
printf("%d", (arr[2] & arr[3]) | (arr[2] ^ arr[3]));  

• 5
• 6
• 7
• 8