Thread: ITS ASSIGNMENT :c program to generate truth table for n input logic gates

Any code for atleast the basic gates??

Code:

#include<stdio.h>
int fun(int a)
..{
..int r=1;
..while(a--)
..{
.. r*= 2;
..}
return r;
..}
..
main()
{
int i,ch,j,n,or=0,mask,and,xor,xnor,nand;
printf("enter the value of n\n");
scanf("%d",&n);
printf("enter ur choice 1 for Or gate 2 for and gate 3 for xor 4 for xnor 5 for nand\n");
scanf("%d",&ch);
switch(ch)
.. {
...... case 1: for(i=0;i<=fun(n)-1;i++)
.......................... {
................................ for(j=n-1;j>=0;j--)
.................................... {....
........................................ mask=i>>j;
........................................ printf("%d\t", mask & 1);
........................................ or=or |(mask & 1);
.................................... }..
........................................ printf("%d\n",or);
.......................... }
.......................... break;
.... case 2 : for(i=0;i<=fun(n)-1;i++)
........................ {and=1;
............................ for(j=n-1;j>=0;j--)
................................ {
.................................... mask=i>>j;
.................................... printf("%d\t",mask & 1);
......................................
.................................... and=and &(mask & 1);
................................ }

.............................. printf("%d\n", and);
........................ }
.......................... break;
.. case 3: for(i=0;i<=fun(n)-1;i++)
...................... {xor=0;
.................... for(j=n-1;j>=0;j--)
............................ {
.................................. mask=i>>j;
.............................. printf("%d\t",mask & 1);
.............................. xor=xor ^(mask & 1);
............................ }
............................ printf("%d\n",xor);
...................... }
.................... break;
..case 4:for(i=0;i<=fun(n)-1;i++)
...................... {xnor=1;
.................... for(j=n-1;j>=0;j--)
............................ {
.................................. mask=i>>j;
.............................. printf("%d\t",mask & 1);
.............................. xnor=xnor ^(mask & 1);
............................ }
............................ printf("%d\n",xnor);
...................... }
.................... break;..
case 5:for(i=0;i<=fun(n)-1;i++)
...................... {nand=1;
.................... for(j=n-1;j>=0;j--)
............................ {
.................................. mask=i>>j;
.............................. printf("%d\t",mask & 1);
.............................. nand=nand &(mask & 1);
............................ }nand=!nand;
............................ printf("%d\n",nand);
...................... }
.................... break;..

default:printf("wrong input\n");break;

.. }
}