C Language Test 3

In which of the following languages is function overloading not possible?

• C

• C++

• Java

• Python

Which of the following function is used to open a file in C++?

• fopen

• fclose

• fseek

• fgets

Which of the following are correct file opening modes in C?

• r

• rb

• w

• All of the above.

What is the return type of the fopen() function in C?

• Pointer to a FILE object.

• Pointer to an integer.

• An integer.

• An integer.

What will be the output of the following code snippet?

#include <stdio.h>

void solve() {

    int ch = 2;

    switch(ch) {

        case 1: printf("1 ");

        case 2: printf("2 ");

        case 3: printf("3 ");

        default: printf("None");

    }

}

int main() {

    solve();

        return 0;

}

• 1 2 3 None

• 2

• 2 3 None

• None

What will be the output of the following code snippet?

#include <stdio.h>

void solve() {

    int x = 1, y = 2;

    printf(x > y ? "Greater" : x == y ? "Equal" : "Lesser");

}

int main() {

    solve();

        return 0;

}

• Greater

• Lesser

• Equal

• None of the above.

What will be the output of the following code snippet?

#include <stdio.h>

void solve() {

    int n = 24;

    int l = 0, r = 100, ans = n;

    while(l <= r) {

        int mid = (l + r) / 2;

        if(mid * mid <= n) {

            ans = mid;

            l = mid + 1;

        }

        else {

            r = mid - 1;

        }

    }

    printf("%d", ans);

}

int main() {

    solve();

        return 0;

}

• 5

• 4

• 3

• 6

What will be the output of the following code snippet?

#include <stdio.h>

void solve() {

    printf("%d ", 9 / 2);

    printf("%f", 9.0 / 2);

}

int main() {

    solve();

        return 0;

}

• 4 4.5000

• 4 4.000

• 4.5000 4.5000

• 4 4

What will be the output of the following code snippet?

#include <stdio.h>

void solve() {

    int x = 2;

    printf("%d", (x << 1) + (x >> 1));

}

int main() {

    solve();

        return 0;

}

• 5

• 4

• 2

• 1

What will be the output of the following code snippet?

#include <stdio.h>

#define VAL 5

int getInput() {

    return VAL;

}

void solve() {

    const int x = getInput();

    printf("%d", x);

}

int main() {

    solve();

        return 0;

}

• 5

• Garbage Value

• Compilation Error

• 0