C Programming - C Preprocessor - Discussion
Discussion Forum : C Preprocessor - Find Output of Program (Q.No. 3)
3.
What will be the output of the program?
#include<stdio.h>
#define SQR(x)(x*x)
int main()
{
int a, b=3;
a = SQR(b+2);
printf("%d\n", a);
return 0;
}
Answer: Option
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
Discussion:
21 comments Page 2 of 3.
Phyu said:
1 decade ago
So, how we should decide?
In which situation we should use BODMAS or ordinary arithmetic operators?
Please give me answer :-).
In which situation we should use BODMAS or ordinary arithmetic operators?
Please give me answer :-).
Alli mohammed said:
9 years ago
Write a program to calculate the valude of x, Where x=(3+4ab)3/2c^2.
Can anyone help me with this?
Can anyone help me with this?
Akshay said:
8 years ago
If sqr(x) (x)*(x) then it should be 25.
And if sqr(x) (x*x) then it will be 11.
And if sqr(x) (x*x) then it will be 11.
Mubin said:
1 decade ago
1st--------division
2nd--------multiplication
3rd--------add or subtract
2nd--------multiplication
3rd--------add or subtract
Yash said:
1 decade ago
I think 3+2*3+2=25.
Can anyone explain about the priority of operators.
Can anyone explain about the priority of operators.
Jyothi said:
10 years ago
1) Division.
2) Multiplication.
3) Add so definitely answer will 11.
2) Multiplication.
3) Add so definitely answer will 11.
Nithish said:
9 years ago
If we convert it in postfix expression, then evaluate it will be 11.
Poornima said:
1 decade ago
The answer should have been 25. Why 11?
Mangesh Kulkarni said:
4 years ago
The Rule of macros is Find and Replace.
(3)
Ravi said:
8 years ago
If sqr(x) x*x then it should be 11.
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