2s complement example.c

#include<stdio.h>
int main(){
	int n;
	printf("Enter the number of bits do you want to enter :");
	scanf("%d",&n);
	char binary[n + 1];
	char onescomplement[n + 1];
	char twoscomplement[n + 1];
	int carry = 1;
	printf("\nEnter the binary number : ");
	scanf("%s",binary);
	printf("%s",binary);
	printf("\nThe ones complement of the binary number is : ");
	for(int i = 0;i < n;i++){
		if(binary[i]=='0'){
			onescomplement[i] = 1;
			}else if(binary[i]=='1'){
			onescomplement[i] = '0';
		}
		onescomplement[n] = '\0';
		printf("%s", onescomplement);
	}
	printf("\nThe two's complement of a binary number is : ");
	for(int i=n-1;i>=0;i--){
		if(onescomplement[i]=='1' && carry == 1){
			twoscomplement[i] = '0';
		}
		else if(onescomplement[i] == '0' && carry == 1){
			twoscomplement[i] = '1';
			carry = 0;
		}
		else
		{
			twoscomplement[i] = onescomplement[i];
		}
	}
	twoscomplement[n] = "\0";
	printf("%s", twoscomplement);
	return 0;
}