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Write a function that converts a lowercase string to upper case using pointers char phrase[] = ”we love pakistan”; Call of function will be void convertToUpperCase(char *ptr);

#include <iostream>
#include <iomanip>
#include <cstring>

using namespace std;

void convertToUpperCase(char *ptr,int);
int main()
{
char phrase[] = “we love pakistan”;

convertToUpperCase(phrase,strlen(phrase));

cout <<phrase<<endl;
return 0;

}
void convertToUpperCase(char *ptr,int size)
{
int j=0;
for(int i=0;i<size;i++)
{
ptr[j]=toupper(ptr[i]);
j++;
}
cout << endl;
}