CS计算机代考程序代写 /* shift.c

/* shift.c

* Demonstrates the different effects of setting bits
* in combination with signed and unsigned “8-bit” data.
*/
#include
#include

void print_binary(unsigned char number, int size)
{
if (!number)
{
putc(‘0’, stdout);
return;
}
if (size == 1)
{
putc((number & 1) ? ‘1’ : ‘0’, stdout);
return;
}
print_binary(number >> 1, size – 1);
putc((number & 1) ? ‘1’ : ‘0’, stdout);
}

// Function to set the kth bit of n
int setBit(int n, int k) { return (n | (1 << k)); } // Function to clear the kth bit of n int clearBit(int n, int k) { return (n & (~(1 << k))); } // Function to toggle the kth bit of n int toggleBit(int n, int k) { return (n ^ (1 << k)); } // Driver code int main(int argc, char **argv) { unsigned char n = 0xaa; int k = 0; if (argc != 3) { printf("Usage: ./bitop (between 1 and 255) (between 0 and 7) \n”);
printf(” Kth bit to be manipulated\n”);
return 1;
}

n = (int)strtol(argv[1], NULL, 16);
k = atoi(argv[2]);

printf(“Number :”);
print_binary(n, 8);
printf(“\n Set %d-th: “, k);
print_binary(setBit(n, k), 8);
printf(“\n”);

printf(“Number :”);
print_binary(n, 8);
printf(“\n Clear %d-th: “, k);
print_binary(clearBit(n, k), 8);
printf(“\n”);

printf(“Number :”);
print_binary(n, 8);
printf(“\n Toggle %d-th: “, k);
print_binary(toggleBit(n, k), 8);
printf(“\n”);
}