#include <iostream>
#include <vector> 
using namespace std;

int main()
{	
	int T;
	cin >> T;
	
	vector<int> nums(T);
	for(int i = 0; i < T; i++)
	{	
		cin >> nums[i];
			
	}
	
	for(int j = 0; j < T; j++)
	{
		int current = nums[j];
		int sum = 0;
		
		if (current == 0)
		{
			sum == 0;
		}
		
		else
		{
			while (current > 0)
			{
				sum++;
				current = current / 10;
			}
		}
		cout << sum << endl;
	}
	

}

循环取位数

#include<stdio.h>

int main(){
	int T,i;
	int wei;
	int a;
	scanf("%d",&T);
	for(i=0;i<T;i++){
		wei=0;
		scanf("%d",&a);
		if(a==0){
			printf("1\n");
		}
		while(a!=0){
			wei++;
			a/=10;
		}
		printf("%d\n",wei);
	}
	return 0;
}

#include<bits/stdc++.h> using namespace std; int main() { int T;

cin>>T;

int x;
int ans[1024]={0};

for(int i=1; i<=T; i++)
{
	cin>>x;
	
	while(x/10)
	{
		ans[i]++; //每一位累加 
		x=x/10;
	}
}

for(int i=1; i<=T; i++)
{
	cout<<ans[i]+1<<endl;
}

return 0;

}