强制类型转换即可：

#include <bits/stdc++.h>

using namespace std;

int main() {
    int x;
    cin >> x;
    cout << char(x) << endl;
    return 0;
}

直接数据类型转换即可

#include<iostream>
using namespace std;
int c;
int main(){
    cin>>c;
    cout<<(char)c<<endl;

AC记录：

https://www.luogu.com.cn/record/65325212

强制转换即可

#include <cstdio>
using namespace std;
int main(){
    int n;
    scanf("%d", &n);
    printf("%c", n);
    return 0;
}

#include<iostream>
using namespace std;
int main(){
	int a;
	cin >> a;
	cout << char(a);
	return 0;
}

#include <iostream>
using namespace std;
int main()
{
    int a;
    cin>>a;
    cout<<(char)a<<endl;
    return 0;
}

`` #include<bits/stdc++.h> using namespace std; int main(){ int a; cin>>a; cout<<char(a); return 0; }

``

#include<bits/stdc++.h>
using namespace std;
long long q,w,e,r,t,y,u,i,o,p,d,f,g,h,j,k,l,z,x,c,v,b,n,m;
string s;double dd,ee,ff=3.14159;char cc;
long long a[100000],as[100000],asd[100000];
int main()
{
	cin>>n;
	cc=n;
	cout<<cc;
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
long long q,w,e,r,t,y,u,i,o,p,d,f,g,h,j,k,l,z,x,c,v,b,n,m;
string s;double dd,ee,ff=3.14159;char cc;
long long a[100000],as[100000],asd[100000];
int main()
{
	cin>>n;
	cc=n;
	cout<<cc;
    return 0;
}