正确做法 审核通过

#include <bits/stdc++.h>
using namespace std;
int a[10000007];
int n;
int to_(string abc){
n = abc.size();
for(int i = 0 ; i < n ; i++){
//		if(abc[i] >= 'A' && abc[i] <= 'Z' ){
//			a[i] = abc[i] - 'A';
//		} else if(abc[i] >= 'a' && abc[i] <='z'){
////			a[i] = abc[i];
//		}
		a[i] = abc[i];
}
}
int pd(int a){
return 0;
if(a >= 'A' && a <= 'Z'){
return 1;
}else if(a >= 'a' && a <= 'z'){
return 2;
} else{
return 0;
}
}
void print(){
int len = n;
for(int i = 0 ; i < len ; i++){
char t;
//		if(a[i] != ' ' || a[i] != '!'){
//			t += a[i] + 'A';
//			cout<<t;
//		}else{
//			a[i] == ' ' ? cout<<" " : cout<<"!";
//		}
		int tt = pd(a[i]);
if(tt == 1){
t += a[i] +'A';
}
if(tt == 2){
t += a[i] + 'a';
}
if(tt == 0){
t = a[i];
}
//		cout<<a[i]<<" ";
		cout<<t;
}
}
int main(){
to_("Hello World");
print();
<span class="hl-keyword hl-control hl-c++">return</span> <span class="hl-constant hl-numeric hl-c++">0</span><span class="hl-punctuation hl-terminator hl-c++">;</span>