//1- (string) ---> (int) stoi("String name"); //2- (int) ---> (string) int n; cin>>n; String s = to_string(n); cout<<s; //3- (char) ---> (int) String str; cin>>str; for(int i; str[i], i++){ char ch = str[i]-'0'; //note:(str[i]-'0') to convert str[i] character to integer cout<<ch; } //3- (int) ---> (char) int n; cin>>n; char ch = (char) n; cout<<ch; //4- (int) ---> (long long) int a; a = a*1LL; //5- (double) ---> (int) && flooring number double n = 7.99999999; n = (int) n;