Can you all fix this coding below, if so "ASAP" would be great?

Write a program that prompts the user to input a string and outputs the string in uppercase letters using dynamic arrays.

int main()

{

char *str;

int strLen;

int len;

char ch;

int i;

cout << "Enter the size of the string: ";

cin >> strLen;

cout << endl;

cin.get(ch);

str = new char[strLen + 1];

cout << "Enter a string of length at most "

<< strLen << ": ";

cin.get(str, strLen + 1);

cout << endl;

cout << "String in upper case letters is:" << endl;

len = strlen(str);

for (i = 0; i < len; i++)

cout << static_cast(toupper(str[i]));

cout << endl;

return 0;

}