I get the following error when I try to compile my code: Error LNK2019 unresolve

Question

I get the following error when I try to compile my code: Error   LNK2019   unresolved external symbol "void __cdecl ReadString(char *,int)" (?ReadString@@YAXPADH@Z) referenced in function _main   Line: 1. How do I correct this? Thanks!

#include <iostream>

// Function Prototypes=========================================================
// Do NOT change the signature of these function prototypes.
// If you do, your code will not compile with my altered main() function
// I suggest that you copy the prototypes below and then fill them in.
// ----------------------------------------------------------------------------
// Read in a line of text INCLUDING SPACES into a string.
// You may assume that the input will NOT exceed the maxLength available.
// Keep in mind that cin stops reading at a whitespace. See page 318.
void ReadString(char * c, int maxLength);

// Get the length of the string and store it in length
// Hint: How does C++ terminate a string? Look for that character!
void GetStringLength(char * c, int * length);

// PrintString - Just print the string in forward order using cout
void PrintString(char * const c);

// PrintStringBackwards - Print the string in reverse order using cout
void PrintStringBackwards(char * const c);

// Search the string for the test character. Return -1 if not found
int FindIndexOfCharacter(char * c, char testVal);

// Return a pointer to the character at the index given
char * GetValueAtIndex(char * const c, int index);

// Return the ascii integer value of the character at requested index
int GetIntegerValueOfIndex(char * c, int index);

// Print the hexadecimal value of the character at the requested index
void PrintHexValueAtIndex(char * c, int index);

// Make the entire string uppercase
void MakeUpperCase(char * c);

// Make the entire string lowercase
void MakeLowerCase(char * c);

// ============================================================================

//[BEGIN MAIN] -- Don't delete this line
int main()
{
   // Use these variables to test.
   // SIZE could change so make sure your code works with different sizes.
   const int SIZE = 80;
   char ca[SIZE];
   char * pc = ca;
   int fPrints = 0;
   int bPrints = 0;
   int lengthChecks = 0;
   int maxLength = 80;

   // Your code below
   // =========================

   char selection = 'z';
   while (selection != 'Q')
   {
       std::cout << "[1] Test ReadString" << std::endl;
       std::cout << "[2] Test GetStringLength" << std::endl;
       std::cout << "[3] Test PrintString" << std::endl;
       std::cout << "[4] Test PrintStringBackwards" << std::endl;
       std::cout << "[5] Test FindIndexOfChararcter" << std::endl;
       std::cout << "[6] Test GetValueAtIndex" << std::endl;
       std::cout << "[7] Test MakeUpperCase" << std::endl;
       std::cout << "[8] Test MakeLowerCase" << std::endl;
       std::cout << "[9] Test GetIntegerValueAtIndex" << std::endl;
       std::cout << "[10] Test PrintHexValueAtIndex" << std::endl;
       std::cout << "[99] Quit" << std::endl;
       std::cout << "Selection:";
       std::cin >> selection;
       std::cin.ignore();
       std::cout << std::endl;

       switch (selection)
       {
       case '1':
           ReadString(pc, SIZE);
           break;
       case '2':
       {
           lengthChecks += 1;
           int length = 0;
           GetStringLength(pc, &length);
           std::cout << "Length of";
       }

       }

       // =========================
       // Your code above

       std::cout << "Press ENTER";
       std::cin.get();
       return 0;
   }
   //[END MAIN] -- Don't delete this line

   void ReadString(char * c, int maxLength);
   {
       std::cout << "Enter a string less than " << maxLength << " characters." << std::endl;
       // Your code here
       // ==============================

       // ==============================
   }

   void GetStringLength(char * c, int * length);

   {

   }
}
// You need to provide the rest of the functions
// See Function Prototypes at the top.

Explanation / Answer

HI, I resolved compilation error.

You can continue with further coding of functions.

#include <iostream>
// Function Prototypes=========================================================
// Do NOT change the signature of these function prototypes.
// If you do, your code will not compile with my altered main() function
// I suggest that you copy the prototypes below and then fill them in.
// ----------------------------------------------------------------------------
// Read in a line of text INCLUDING SPACES into a string.
// You may assume that the input will NOT exceed the maxLength available.
// Keep in mind that cin stops reading at a whitespace. See page 318.
void ReadString(char * c, int maxLength);
// Get the length of the string and store it in length
// Hint: How does C++ terminate a string? Look for that character!
void GetStringLength(char * c, int * length);
// PrintString - Just print the string in forward order using cout
void PrintString(char * const c);
// PrintStringBackwards - Print the string in reverse order using cout
void PrintStringBackwards(char * const c);
// Search the string for the test character. Return -1 if not found
int FindIndexOfCharacter(char * c, char testVal);
// Return a pointer to the character at the index given
char * GetValueAtIndex(char * const c, int index);
// Return the ascii integer value of the character at requested index
int GetIntegerValueOfIndex(char * c, int index);
// Print the hexadecimal value of the character at the requested index
void PrintHexValueAtIndex(char * c, int index);
// Make the entire string uppercase
void MakeUpperCase(char * c);
// Make the entire string lowercase
void MakeLowerCase(char * c);
// ============================================================================
//[BEGIN MAIN] -- Don't delete this line
int main()
{
// Use these variables to test.
// SIZE could change so make sure your code works with different sizes.
const int SIZE = 80;
char ca[SIZE];
char * pc = ca;
int fPrints = 0;
int bPrints = 0;
int lengthChecks = 0;
int maxLength = 80;
// Your code below
// =========================
char selection = 'z';
while (selection != 'Q')
{
std::cout << "[1] Test ReadString" << std::endl;
std::cout << "[2] Test GetStringLength" << std::endl;
std::cout << "[3] Test PrintString" << std::endl;
std::cout << "[4] Test PrintStringBackwards" << std::endl;
std::cout << "[5] Test FindIndexOfChararcter" << std::endl;
std::cout << "[6] Test GetValueAtIndex" << std::endl;
std::cout << "[7] Test MakeUpperCase" << std::endl;
std::cout << "[8] Test MakeLowerCase" << std::endl;
std::cout << "[9] Test GetIntegerValueAtIndex" << std::endl;
std::cout << "[10] Test PrintHexValueAtIndex" << std::endl;
std::cout << "[99] Quit" << std::endl;
std::cout << "Selection:";
std::cin >> selection;
std::cin.ignore();
std::cout << std::endl;
switch (selection)
{
case '1':
ReadString(pc, SIZE);
break;
case '2':
{
lengthChecks += 1;
int length = 0;
GetStringLength(pc, &length);
std::cout << "Length of";
}
}

// =========================
// Your code above
std::cout << "Press ENTER";
std::cin.get();
return 0;
}
}
//[END MAIN] -- Don't delete this line
void ReadString(char * c, int maxLength){
std::cout << "Enter a string less than " << maxLength << " characters." << std::endl;
// Your code here
// ==============================
// ==============================
}
void GetStringLength(char * c, int * length)
{
  
}
// You need to provide the rest of the functions
// See Function Prototypes at the top.

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.