C Preprocessor
practice.

What will be the output of the following C code?

#define display(text) printf(#text "@")
main()
{
    display(hello.);
    display(good morning!);
}

What will be the output of the following C code?

#include <stdio.h>
#define p( n ) printf( "t%%\n" #n " = %d", t##n )
int t3=10;
int main()
{
    int x;
    x=p(3);
}

What will be the output of the following C code?

#include <stdio.h>
#define p( n,m ) printf( "%d", m##n )
#define q(a,b) printf("%d",a##b)
main()
{
   p(3,4);
   q(5,6);
}

What will be the output of the following C code?

#include<stdio.h>
#define hello 10
void main()
{
    printf("%d",hello);
    #undef hello
    printf("%d",hello);
}

What will be the output of the following C code?

#include <stdio.h>
#define display( n ) printf( "a" #n " = %d", a##n )
int main()
{
   display(3);
}

The preprocessor directive used to give additional information to the compiler, beyond which is conveyed in the language . . . . . . . .

Which of the following operators is used to concatenate two strings without space?

#pragma GCC poison should be followed by a list of identifiers that are . . . . . . . .

In the directive, #pragma pack(n), which of the following is not a valid value of n?

What will be the output of the following C code?

#include <stdio.h>
#define a 2
main()
{
    int r;
    #define a 5
    r=a*2;
    printf("%d",r);
}

What will be the output of the following C code?

#include<stdio.h>
#define max 100
main()
{
    #ifdef max
    printf("hello");
}

What will be the output of the following C code?

#include<stdio.h>
#define hello 10
main()
{
    #ifdef hello
    #undef hello
    #define hello 100
    #else
    #define hello 200
    #endif
    printf("%d",hello);
}

Which of the following is not a preprocessor directive?

The preprocessor directive which is used to remove the definition of an identifier which was previously defined with #define?

The function of __attribute__((packed)); can also be performed using . . . . . . . .

The preprocessor directive which checks whether a constant expression results in a zero or non-zero value . . . . . . . .

What will be the output of the following C code?

#include<stdio.h>
void f()
{
    #define sf 100
    printf("%d",sf);
}
int main()
{
    #define sf 99;
    f();
    printf("%d",sf);
}

What will be the output of the following C code?

#define HELLO(a) #a
main()
{
    printf(HELLO(good        morning)); 
}

The purpose of the preprocessor directive #error is that . . . . . . . .

What will be the output of the following C code?

#include<stdio.h>
#define ram 10
main()
{
    #ifdef ram
    #define ram 20
    #endif
    printf("%d",ram);
}