fork download

copy

int main(int argc, char *argv[])
{
	MixedExpression res;
	MixedExpression op1;
	MixedExpression op2;
	char symbol;
	long x,y;
	ifstream in;
	ofstream out;
 
  	if(argc > 1)
	{
		in.open(argv[1]);
		if(in)
		{
			out.open(argv[2]);
			while(!in.eof())
			{
				res.ReadMixedExp(in);
				switch(symbol)
				{
					case '+': res = op1.add(op2); // Get the sum.
						break;
					case '-': res = op1.subtract(op2); // Get the difference.
						break;
					case '*': res = op1.multiply(op2); // Get the product.
						break;
					case '/': res = op1.divide(op2); // Get the quotient.
						break;
				}
				res.printData(out);
			}
		}
		// Close the input file.
		in.close();
		// Close the output file.
		out.close();
	}	 
	return 0;
}
 
 

prog.cpp: In function ‘int main(int, char**)’:
prog.cpp:3:2: error: ‘MixedExpression’ was not declared in this scope
  MixedExpression res;
  ^
prog.cpp:3:18: error: expected ‘;’ before ‘res’
  MixedExpression res;
                  ^
prog.cpp:4:18: error: expected ‘;’ before ‘op1’
  MixedExpression op1;
                  ^
prog.cpp:5:18: error: expected ‘;’ before ‘op2’
  MixedExpression op2;
                  ^
prog.cpp:8:2: error: ‘ifstream’ was not declared in this scope
  ifstream in;
  ^
prog.cpp:8:11: error: expected ‘;’ before ‘in’
  ifstream in;
           ^
prog.cpp:9:2: error: ‘ofstream’ was not declared in this scope
  ofstream out;
  ^
prog.cpp:9:11: error: expected ‘;’ before ‘out’
  ofstream out;
           ^
prog.cpp:13:3: error: ‘in’ was not declared in this scope
   in.open(argv[1]);
   ^
prog.cpp:16:4: error: ‘out’ was not declared in this scope
    out.open(argv[2]);
    ^
prog.cpp:19:5: error: ‘res’ was not declared in this scope
     res.ReadMixedExp(in);
     ^
prog.cpp:22:22: error: ‘op1’ was not declared in this scope
      case '+': res = op1.add(op2); // Get the sum.
                      ^
prog.cpp:22:30: error: ‘op2’ was not declared in this scope
      case '+': res = op1.add(op2); // Get the sum.
                              ^
prog.cpp:37:3: error: ‘out’ was not declared in this scope
   out.close();
   ^
prog.cpp:7:7: warning: unused variable ‘x’ [-Wunused-variable]
  long x,y;
       ^
prog.cpp:7:9: warning: unused variable ‘y’ [-Wunused-variable]
  long x,y;
         ^

Standard output is empty