Question

1. In the given below code, what will be the value of a variable x? #include int main() { int y = 100; const int x = y; printf("%d\n", x); return 0; }

Answer 1

The value of variable x will be 100

Let's correct the question.

1. In the given below códe, what will be the value of a variable x?

#include <stdio.h>

int main()

{

   int y = 100;

   const int x = y;

   printf("%d\n", x);

   return 0;

}

Explanation

A variable 'y' is defined with the data type int which means integer value.

The value which is assigned to the variable 'y' is 100.

Now, another variable 'x' is defined with data types const and int.

'x' is assigned with the variable 'y' value that is 100.

It means that x = 100

Now, the value of the 'x' variable is printed and we get the output as 100.

Extra Information

int

int data type is used when we are assigning an integer value to a variable.

Example

int x = 10;

float

float data type is used when we are assigning a float value or decimal value to a variable.

Example

float x = 5.6;

const

const data type is used when we strictly want that variable's value should not change further in the códe even if the value is assigned again to that variable.

Example

const int x = 100;

If you run this códe

#include <stdio.h>

int main()

{

   const int x = 100;

   x = 20;

   printf("%d\n", x);

   return 0;

}

It will give an error because a variable having data type as const can't be assigned a new value.