C语言基于栈实现二进制转十进制

#include <stdio.h>

char stack[100];
int top = 0;

int cf(int n)
{
	int t=1;
	for (int i = 0; i < n; i++)
	{
		t *= 2;
	}

	return t;
}

int main()
{
	char s[100];

	scanf("%s",&s);

	int i = 0;
	while (s[i])
	{
		stack[top++] = s[i];
		i++;
	}

	int sum=0;
	int t;
	i = 0;
	while(top>0)
	{
		t = (int)stack[--top] - 48;
		printf("%d\n", t);
		sum += t*cf(i);

		i++;
	}

	printf("%d\n", sum);


	return 0;
}