C++ Programming · all questions

Variables and Data Types in C++
practice.

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Q101

What will be the output of the following C++ code?

#include <iostream>
using namespace std;
enum  cat 
{
    temp = 7
};
int main()
{
    int age = 14;
    age /= temp;
    cout << "If you were cat, you would be " << age << endl;
    return 0;
}

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Q102

For what values of the expression is an if-statement block not executed?

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Q103

Identify the incorrect statements.

int var = 10;
int *ptr = &(var + 1); //statement 1
int *ptr2 = &var; //statement 2
&&var = 40; //statement 3

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Q104

Pick the right option.
Statement 1: Global values are not initialized by the stream.
Statement 2: Local values are implicitly initialised to 0.

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Q105

Can two functions declare variables(non static) with the same name?

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Q106

Is the size of character literals different in C and C++?

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Q107

What will be the output of the following C++ code?

#include <iostream>
using namespace std;
int main()
{
    void a = 10, b = 10;
    int c;
    c = a + b;
    cout << c;
    return 0;
}

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Q108

Which is correct with respect to the size of the data types?

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Q109

Which of the following is not one of the sizes of the floating point types?

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Q110

. . . . . . . . have the return type void.

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Q111

Which of these expressions will make the rightmost set bit zero in an input integer x?

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Q112

Which of the following is a valid floating-point literal?

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Q113

Identify the type of variables.

typedef char* CHAR;
CHAR p,q;

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Q114

Given the variables p, q are of char type and r, s, t are of int type. Select the right statement?

 1. t = (r * s) / (r + s);

 2. t = (p * q) / (r + s);

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Q115

What will be the output of the following C++ code?

#include <iostream>
using namespace std;
int main()
{
    float f1 = 0.5;
    double f2 = 0.5;
    if (f1 == 0.5f)
        cout << "equal";
    else
        cout << "not equal";
    return 0;
}

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Q116

To which of these enumerators can be assigned?

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Q117

Pick the right option.
Statement 1: A definition is also a declaration.
Statement 2: An identifier can be declared just once.

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Q118

What will be the output of the following C++ code?

#include <iostream>
using namespace std;
int g = 100;
int main()
{
    int a;
    {
        int b;
        b = 20;
        a = 35;
        g = 65;
        cout << b << a << g;
    }
    a = 50;
    cout << a << g;
    return 0;
}

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Q119

Identify the user-defined types from the following?

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Q120

Identify the incorrect option.

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