Question

C++ Language

1. List any four different data types that have been discussed in class and/or used in your programs.

2. The expression 4 + 6 / 3 * 0 evaluates to

3. Code two different ways to add 1 to a variable called count and have the result stored in count.

Answer 1

1.The four data types used in c++ are:

• Integer : It is used by the keyword int . It is used to store integer values such as (1,2,3) etc. The size is generally 4bytes.
• Character: It is used by the keyword char. It is used for representing a single character. Like 'a','b' etc.The size is generally 1byte.
• Boolean: It is used by the keyword bool and it is used for representing true or false values. It is mainly used for logical equivalence.
• Floating Point: It is used by the keyword float and used by representing single precision floating number/point. The size is of 4bytes.

2. The output of the code is 4 because it uses the simple BODMAS rule to calculate the expression.

• So first 6/3 which will give 2.
• 2*0=0
• 4 + 0 =4

So the answer is 4.

3.The two different ways are as follows:

• First way:

  • #include <bits/stdc++.h>
    
    using namespace std;
    
    int main(){
        // First way
        int count = 0;
        count = count  + 1;
        return 0;
    }

• Second way:

  • #include <bits/stdc++.h>
    
    using namespace std;
    
    int main(){
        // Second way
        int count = 0;
        count = count++;
        return 0;
    }

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