I wrote this program and it compiles fine with Visual Studio. Problem is my teacher wants it compiled with g++ and I cant get it to compile. It says, "Main must return 'int'" Heres the entire program. I would appreciate any help/suggestions anyone can provide.
Code:// '***' Represents start of new 'sub-function' // <<Got rid of header files and conio>> #include <iomanip> #include <iostream> using std::cout; using std::cin; using std::setw; //max int of 15. const unsigned x = 15; //define matrix as x+1 by x+1. typedef unsigned MatrixType[x+1][x+1]; //declare y as user defined dimension size (odd numbers only) unsigned Y; MatrixType Matrix; //"sub-function" definitions. void Description(); void Dimensions(); void Generate(); void Print(); void Exit(); //MAIN FUNCTION--include "sub-functions" in main function. void main() { Description(); Dimensions(); Generate(); Print(); Exit(); } //***Information screen using cout statements. void Description() { cout<<"????????????????????????????????????????????????????????????????????????????\n"; cout<<"? ?\n"; cout<<"? MAGIC SQUARE PROGRAM ?\n"; cout<<"? ?\n"; cout<<"? ?\n"; cout<<"? This is a program that creates a magic square that ?\n"; cout<<"? will be filled in by you. A magic square is an x by x matrix ?\n"; cout<<"? that is filled with numbers so that the rows, columns and ?\n"; cout<<"? diagnol lines add up to be the same number. ?\n"; cout<<"? ?\n"; cout<<"? ?\n"; cout<<"????????????????????????????????????????????????????????????????????????????\n"; cout<<"\n"; cout<<"\n"; cout<<"\n"; cout<<"\n"; } //***function for getting the dimensions from keyboard. void Dimensions() { cout<<"Get ready to make your Magic Square!\n"; cout<<"Please enter an ODD number (3 through 15).\n"; cout<<"After that hit Enter.\n\n\n\n"; cin>> Y; } //***function for generating magic square with user defined input. void Generate() { unsigned i; unsigned Dsquare; unsigned Row; unsigned Column; //arrange matrix so that Magic Square will work. Row = 1; Column = (Y+1)/2; Matrix[Row][Column] = 1; Dsquare = Y*Y; for (i=2; i<=Dsquare; i++) { if ((i-1)%Y==0) Row++; else { Row--; Column++; if (Row==0) Row = Y; else if (Column==(Y+1)) Column = 1; } Matrix[Row][Column] = i; } } //***function for printing results. void Print() { unsigned Row; unsigned Column; //creating lined box around numbers. cout<<"\n\n\n\n\n\n\n\n"<<setw((4*Y-10)/2) <<""<<setw(2) <<Y<<" x " <<setw(2)<<Y<<" Square\n"; cout<<"ÚÄ"; //Creates top of box (margin spacing). for (Column=1; Column<=Y; Column++) cout<<"ÄÄÄÄ"; cout<<"¿\n"; for (Row=1; Row<=Y; Row++) { //Creates 'sides' of box. cout<<"³ "; for (Column=1; Column<=Y; Column++) cout<<setw(3)<<Matrix[Row][Column]<<" "; cout<<"³\n"; } cout<<"ÀÄ"; //Creates bottom of box (margin spacing). for (Column=1; Column<=Y; Column++) cout<<"ÄÄÄÄ"; cout<<"Ù\n"; } //***function for exit screen. void Exit() { cout<<"This is a Magic Square!!!\n"; cout<<"\nThank you for using this program...\n"; cout<<"Please press any key to exit!\n\n\n\n"; }