help please!!!!!

i am new to c++ and this is my second program for class...keep getting the error, warning: cannot pass objects of non-POD type 'struct std::string' through '...'; call will abort at runtime. can someone help me out please, here is my code:

Code:

---

#include <stdio.h>
#include <cstdlib>
#include <iostream>

using namespace std;

// Input first and last name, grade, ande print out their name and lettergrade
int main(int argc , char *argv)

{
        string name, grade, A, B, C, D, F;
       
        cout << "Please insert your first and last name:\n";
        cin >> name;       
        cout << "Please insert your numeric grade:\n";
        cin >> grade;
        name = name;
        grade = grade;
        if ("90" <= grade &&
                grade <="100") A;
        if ("80" <= grade &&
                grade <= "89") B;
        if ("70" <= grade &&
                grade <= "79") C;
        if ("60" <= grade &&
                grade <= "69") D;
        if (grade <= "59") F;
       
        printf("Hello name\n", name);
        printf("You Made grade\n", grade);
}

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printf only accepts c-style string, that is const char * typed strings. std::string has a method, c_str that will provide a c-style version of the string.

Code:

---

printf("Hello name\n", name.c_str());

---

And what would '...' be?

Don't mix C and C++ like that. Use cout instead of printf.

thanks for the help i fixed it