C Preprocessor

Practice C Preprocessor – What will be output of the following “c” code?

#include



#define SQR(x) x*x



void main()



{



int a =5, b, c;



b = SQR(a++);



c = SQR(++a);



printf("%d %d", b, c);



}

Practice C Preprocessor –

What will be the output of the following program on GCC compiler?

#include<stdio.h>  

#define FUN(arg) do{if(arg)printf("Hello World...", "
");}while(--i)    

int main() {      

  int i=2;      

  FUN(i<3);      

  return 0;  

} 

Practice C Preprocessor –

What will be the output of the following program on GCC compiler ?

#include<stdio.h>  

#define SWAP(a, b) int t;t=a;a=b;b=t;  

int main() {      

  int a=10, b=12;      

  SWAP(a, b);      

  printf("a = %d, b = %d
", a, b);      

  return 0;  

}  

Practice C Preprocessor –

What will be the output of the following program on GCC compiler?

#include <stdio.h> 

#define CUBE(x) (x*x*x)  

int main() {     

  int a, b=3;     

  a = CUBE(b++);     

  printf("%d, %d
", a, b);     

  return 0; 

} 

Practice C Preprocessor –

What will be the output of the following program on GCC compiler?

#include <stdio.h> 

#define SQR(x)(x*x)  

int main() {     

  int a, b=3;     

  a = SQR(b+2);     

  printf("%d
", a);     

  return 0; 

} 

Practice C Preprocessor –

What will be the output of the following program on GCC compiler?

#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
", i, j, k);      

  return 0;  

}  

Practice C Preprocessor –

What will be the output of the following program on GCC compiler?

#include<stdio.h>  

#define FUN(arg) do{if(arg)printf("Hello World...", "
");}while(--i)    

int main() {      

  int i=2;      

  FUN(i<3);      

  return 0;  

} 

Practice C Preprocessor –

What will be the output of the following program on GCC compiler ?

#include<stdio.h>  

#define SWAP(a, b) int t;t=a;a=b;b=t;  

int main() {      

  int a=10, b=12;      

  SWAP(a, b);      

  printf("a = %d, b = %d
", a, b);      

  return 0;  

}  

Practice C Preprocessor –

What will be the output of the following program on GCC compiler?

#include <stdio.h> 

#define CUBE(x) (x*x*x)  

int main() {     

  int a, b=3;     

  a = CUBE(b++);     

  printf("%d, %d
", a, b);     

  return 0; 

} 

Practice C Preprocessor –

What will be the output of the following program on GCC compiler?

#include <stdio.h> 

#define SQR(x)(x*x)  

int main() {     

  int a, b=3;     

  a = SQR(b+2);     

  printf("%d
", a);     

  return 0; 

} 

Practice C Preprocessor –

What will be the output of the following program on GCC compiler?

#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
", i, j, k);      

  return 0;  

}  

Practice C Preprocessor –

What will be the output of the following program on GCC?

#include <stdio.h>

int main(){

  int i=-4, j, num=10;

  j = i % -3;

  j = (j ? 0: num*num);

  printf("j=%d
",j);

  return 0;

}

Practice C Preprocessor –

What will be the output of the following program on GCC?

#include <stdio.h>

int main(){

  int x=3, y=4, z=4;

    printf("ans=%d
",z>=y>=x ?10:20);

  return 0;

}

Practice C Preprocessor –

What will be the output of the following program on GCC compiler?

#include<stdio.h>    

int main() {      

  int k=1;      

  printf("%d == 1 is" "%s
", k, k==1?"TRUE":"FALSE");      

  return 0;  

}  

Practice C Preprocessor –

What will be the output of the following program on GCC compiler?

#include<stdio.h> 

int check (int, int); 

int main() {     

  int c;    

  c = check(10, 20);  

  printf("c=%d
", c);     

  return 0;

} 

int check(int i, int j) {  

  int *p, *q; 

  p=&i;    

  q=&j;   

  i>=45 ? return(*p): return(*q); 

}