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  1. What will be the output of the program?

      #include
  #define SQR(x)(x*x)
 
  int main() 
  {    
     int a, b=3;  
     a = SQR(b+2);  
     printf("%d\n", a);    
     return 0;
  }

    2. A.

    25
    B.

    11
    C.

    Error
    D.

    Garbage value

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    Workspace

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    Answer : Option B

    Explanation :

    The macro function SQR(x)(x*x) calculate the square of the given number 'x'. (Eg: 102)

    Step 1: int a, b=3; Here the variable a, b are declared as an integer type and the variable b is initialized to 3.

    Step 2: a = SQR(b+2); becomes,

    => a = b+2 * b+2; Here SQR(x) is replaced by macro to x*x .

    => a = 3+2 * 3+2;

    => a = 3 + 6 + 2;

    => a = 11;

    Step 3: printf("%d\n", a); It prints the value of variable 'a'.

    Hence the output of the program is 11

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