Thread: Bitwise Shift

When I print this out, is it suppose to be two identical columns? Also the last number I see for both columns is -2147483648, is there something wrong with that?

Code:

#include <stdio.h>

int main( int argc, char *argv[] ){

  int x = 1;
  unsigned int y = 1;
  int i;

  int limit = sizeof(int) * 8;

  printf("The value for x is %d. \n", x);
  printf("The value for y is %d. \n\n", y);

  printf("Signed \t\t     Unsigned \n");

  for(i = 0; i < limit - 1; i++){
    
    x = x << 1;
    y = y << 1;
    
    printf("%d %20d \n", x, y); 
  }
  
  return 0;
}

Your output is fine. Shifting left is unaffected by signed or unsignedness. Shifting right may not be.
You've specified that printf() interprets the numbers as signed in both cases. So it does.