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I'm nearly finished now and I need help fixing errors.
Any help would be greatly appreciated.
I get three Linker Errors. How do linker errors occur?
Code:#include <iostream> #include <conio> #include <iomanip> using namespace std; void reset_array(char minefield[][10], int row, int col); void print_array(char minefield[][10], int row, int col); void print_array_without_bombs(char minefield[][10], int row, int col); void fill_array_with_bombs(char minefield[][10], int r1, int c1); bool check_for_hit(int r1, int c1); //------------------------------------------------------------------------- // Behold, the main function //------------------------------------------------------------------------- void main() { int row, col, bombs_left=5, r1, c1; int num_found=0, num_attempts=0; bool all_found=false; //Declaring the two-dimensional array char minefield[10][10]; //Sets all cells in the array to '-' reset_array(minefield, row, col); //Prints out the array with everything reveiled print_array(minefield, row, col); //Plants 5 bombs in the array-minefield fill_array_with_bombs(minefield, row, col); //clears the screen so 2nd player can't cheat system("CLS"); //sets the gameboard for the 2nd player to guess for bomb locations print_array_without_bombs(minefield, row, col); cout<<"Time to start sweeping for mines!"; //loop until all the bombs are found while (all_found==false) { cout<<"Please enter a row and column number: "; cin>>r1; cin>>c1; //If the 2nd player enters two zeros, quit program if (r1==0 && c1==0) { cout<<"You quit. Gave Over."; all_found=true; } //decides whether location guessed is a bomb location and returns true check_for_hit(r1, c1); if (check_for_hit(r1, c1)==true) { //1 bomb closer to finishing the program num_found++; cout<<"There are now "<<bombs_left--<<"bombs left in the minefield"; //If all the bombs are found, the while loop will break if (bombs_left==0) { all_found=true; } } //Counts the number of attempts to poke fun of you later. num_attempts++; //Prints the up-to-date minefield print_array_without_bombs(minefield, row, col); //Once all the bombs are found, it will print out how many attempts it took if (all_found==true) { cout<<"It took you "<<num_attempts<<" guesses to find all 5 bombs! HAHA!"; } //Reveils the bomb locations and all other occurances print_array(minefield, row, col); } } //------------------------------------------------------------------------- //Sets all cells in the array to '-' //------------------------------------------------------------------------- void reset_array(char minefield[][10], int row, int col) { for (row=0; row<10; row++) { for (col=0; col<10; col++) { minefield[row][col]='-'; } } } //------------------------------------------------------------------------- //Prints out the array with everything reveiled //------------------------------------------------------------------------- void print_array(char minefield[][10], int row, int col) { int x=1; cout<<" 1 2 3 4 5 6 7 8 9 10"; for (row=0; row<10; row++) { cout<<"\nRow "<<setw(2)<<x<<": "; x=x++; for (col=0; col<10; col++) { cout<<" "<<minefield[row][col]; } } } //-------------------------------------------------------------------------- //sets the gameboard for the 2nd player to guess for bomb locations //-------------------------------------------------------------------------- void print_array_without_bombs(char minefield[][10], int row, int col) { int x=1; cout<<" 1 2 3 4 5 6 7 8 9 10"; for (row=0; row<10; row++) { for (col=0; col<10; col++) { if (minefield[row][col]== 'B') { minefield[row][col]= '-'; } } } for (row=0; row<10; row++) { cout<<"\nRow "<<setw(2)<<x<<": "; x=x++; for (col=0; col<10; col++) { cout<<" "<<minefield[row][col]; } } } //-------------------------------------------------------------------------- //Plants 5 bombs in the array-minefield //-------------------------------------------------------------------------- void fill_array_with_bombs(char minefield[][10], int r1, int c1) { int t=0; cout<<"Now you will place 5 bombs in the minefield, in different locations."; while (t<5) { cout<<"Enter a row number and column number coordinate ( example:r c ):"; cin>>r1; cin>>c1; if (r1>0 && r1<10 && c1>0 && c1<10) { if (minefield[r1][c1]=='B') { cout<<"That bomb location has already been picked."; } else if (minefield[r1][c1]=='-') { minefield[r1][c1]='B'; t++; } } else { cout<<"Make sure your coordinates are between 0 and 10."; } } system("PAUSE"); } //--------------------------------------------------------------------------- //decides whether location guessed is a bomb location and returns true //--------------------------------------------------------------------------- bool check_for_hit(char minefield[][10], int r1, int c1) { if (minefield[r1][c1]== 'X') { cout<<"Already blew that bomb."; return false; } else if (minefield[r1][c1]== 'M') { cout<<"Location already tried."; return false; } else if (minefield[r1][c1]== '-') { cout<<"MISS!"; return false; } else if (minefield[r1][c1]== 'B') { cout<<"HIT!"; return true; } else { return false; } };
