Submit a C file with the following two functions defined. unsigned char permutat

Question

Submit a C file with the following two functions defined. unsigned char permutation(unsigned char x) unsigned char inverse (unsigned char y) The first C function should implement any non-trivial permutation function (ie, a one-to-one and onto function from byte to byte) of your choosing using at least three C operations. For the function to be invertible, each individual operation you choose has to be invertible too, so think about what combination of C operations are invertible and string three or more of them together. The second C function should be the inverse of the first C function. If you're successful, x = inverse (permutation (x)) should be true for every x. The file you submit should be named exactly hw1_permutation.c.

Explanation / Answer

#include<stdio.h>

unsigned char permutation(unsigned char);

unsigned char inverse(unsigned char);

int main()

{

unsigned char c,d,x,y;

printf("Enter any character:");

scanf("%c",&x);

y=permutation(x);

d=inverse(y);

if(x==d)

{

printf("True");

}

reutrn 0;

}

unsigned char inverse(unsigned char y)

{

int il,ir,f;

il=invirghtsgift2(y);

ir=invleftshift4(il);

f=invrightshift2(ir);

printf("/ninverse value is %c/n/n",f);

return f;

}

unsigned char permutation(unsigned char X)

{

unsigned char b=X;

printf("ASCII%d",sizeof(X));

int d,p,r,i,sum,f;

d=(int)X;

//printf("/n/n%d",convert(d));

r=rightshift2(d);

l=leftshift4(r);

f=rightshift2(i);

//printf("/nRight shift %d",p);

//printf("/n%d Left",leftshift4(p));

//inverse((char)f);

return f;

}

int rightshift2(int v)

{

//printf("/n/n%d",v>>2);

return v>>2;

}

int leftshift4(int v)

{

return v<<4;

}

int invrightshift2(int v)

{

//printf("/n/n%d",v>>2);

return v<<2;

}

int invleftshift4(int v)

{

return v>>4;

}

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