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C Preprocessor Questions And Answers.

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Exercise :: C Preprocessor
1.Which of the following is not logical operator?
A. &
B. &&
C. ||
D. !
2.What will the SWAP macro in the following program be expanded to on preprocessing? will the code compile?
#include<stdio.h>
#define SWAP(a, b, c)(c t; t=a, a=b, b=t)
int main()
{
    int x=10, y=20;
    SWAP(x, y, int);
    printf("%d %d\n", x, y);
    return 0;
}
A. It compiles
B. Compiles with an warning
C. Compiles and print nothing
D. Not compile
3.In which stage the following code?

#include<stdio.h>
gets replaced by the contents of the file stdio.h

A. During editing
B. During linking
C. During linking
D. During preprocessing
4.What will be the output of the program?
#include<stdio.h>
#define MAN(x, y) ((x)>(y)) ? (x):(y);

int main()
{
    int i=10, j=5, k=0;
    k = MAN(++i, j++);
    printf("%d, %d, %d\n", i, j, k);
    return 0;
}
A. 12, 6, 12
B. 11, 5, 11
C. 11, 5, Garbage
D. 12, 6, Garbage
5.What will be the output of the program?
#include<stdio.h>
#define SQUARE(x) x*x

int main()
{
    float s=10, u=30, t=2, a;
    a = 2*(s-u*t)/SQUARE(t);
    printf("Result = %f", a);
    return 0;
}
A. Result = -100.000000
B. Result = -25.000000
C. Result = 0.000000
D. Result = 100.000000