MCA Entrance Previous Year Question Bank

What is the output of the following C++ code

#include <iostream>

using namespace std;

class Base {

public:

virtual void show() { cout << "Base"; }

};

class Derived : public Base {

public:

void show() override { cout << "Derived"; }

};

int main() {

Base* ptr;

Derived d;

ptr = &d;

ptr->show();

return 0;

}

What happens when a recursive function in C lacks a proper base condition?

What will be the output of the following program?

#include <stdio.h>

#include <string.h>

int main() {

char str1[20] = "Hello";

char str2[20] = "Hello";

strcpy(str2, str1);

if (strcmp(str1, str2) 0)

printf("Equal\n");

else

printf("Not Equal\n");

return 0;

}

What will be the output of the following code snippet?

#include <stdio.h>

int main() {

float x = 5;

if (x > 10)

printf("Greater");

else if (x = 10)

printf("Equal");

else

printf("Smaller");

return 0;

}

Which of the following statements about structures and unions in C is true?

Read the following statements about functions in C and choose the correct option:

(i) A function in C can return only one value directly.

(ii) Function names can be the same as variable names in the same scope.

(iii) A function must always take at least one argument.

(iv) Recursion is allowed in C functions.

What will be the output of the following C code?

#include <stdio.h>

int main() {

int a 10:

int p &a

printf("%d\n", *p);

return 0;

}

What is the range of unsigned int in C?

What will be the output of the following code snippet?

#include <stdio.h>

int main() {

int i;

for (i = 1; i <= 5; i++) {

if (i == i)

continue;

printf("%d", i);

}

return 0;

}