#include<bits/stdc++.h>
//Phan thanh Nhàn
using namespace std;
void c2a(char* s){
	char tmp[100];
	strcpy(tmp,s);		
	char* token=strtok(tmp," ");
	while(token){
		cout<<strlen(token)<<" ";
		token=strtok(NULL," ");
	}
}
 
void c2b(char* s){
	char tmp[100],ans[100];
	strcpy(tmp,s);	
	char* token=strtok(tmp," ");
	int max=strlen(token);
	while(token){
		if(strlen(token)>max){
			max=strlen(token);
			strcpy(ans,token);
		}
		token=strtok(NULL," ");
	}
	cout<<ans;
}
 
 
int main(){
	char s[]={"ChatGPT provides excellent support for research as well as many other tasks"};
	c2b(s);
 
}

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