Bit Toggle

Code

#include <stdio.h>
int toggleOfbit(signed char reg,int pos);
int main()
{
  signed char reg;
  int pos=5;
  scanf("%hhu",&reg);
  printf("%d",toggleOfbit(reg,pos));
  return 0;

}
int toggleOfbit(signed char reg,int pos)
{
   reg ^= (1<<pos);
   return reg;

}

Solving Approach