Logic_Gates.c

#include<stdio.h>
#include<math.h>
#include<stdlib.h>

unsigned int NOR(unsigned int,unsigned int);
unsigned int X_NOR(unsigned int,unsigned int);
unsigned int NAND(unsigned int,unsigned int);

int main(void)
{

unsigned int a,b;
int choice;

do{
printf("\nWelcome to Logic Gates...\n");
printf("1)Nor gate\n");
printf("2)X-Nor gate\n");
printf("3)Nand gate\n");
printf("4)Exit\n\n");
printf("Enter a and b (Two Inputs for Logic Gate) \n");
scanf("%u %u",&a,&b);

printf("\nNow Choose Any Logic Gate\n");
scanf("%d",&choice);

 switch(choice){
  case 1 :
  printf("\nNOR gate :\n %u NOR %u --> %u\n",a,b,NOR(a,b));
  break;

  case 2 :
  printf("\nX-NOR gate :\n %u X-NOR %u --> %u\n",a,b,X_NOR(a,b));
  break;

  case 3 :
  printf("\nNAND gate :\n %u NAND %u --> %u\n",a,b,NAND(a,b));
  break;

  case 4 : exit(0);
  break;

  default : fputs("Error Wrong Choice\n",stderr);
 }
}while(choice < 4);

return 0;
}


unsigned int NOR(unsigned int a,unsigned int b)
{
return ( (~(a | b)) & (((int)pow(2,floor(log2( (a > b) ? ((a == 0) ? 1 : a) : ((b == 0) ? 1 : b) )) + 1) )  - 1) );
}

unsigned int X_NOR(unsigned int a,unsigned int b)
{
return ( (~(a ^ b)) & (((int)pow(2,floor(log2( (a > b) ? ((a == 0) ? 1 : a) : ((b == 0) ? 1 : b) )) + 1) )  - 1) );
}

unsigned int NAND(unsigned int a,unsigned int b)
{
return ( (~(a & b)) & (((int)pow(2,floor(log2( (a > b) ? ((a == 0) ? 1 : a) : ((b == 0) ? 1 : b) )) + 1) )  - 1));
}