expected primary-expression before ‘<<’ token

[larrybrazos]

very simple c++ program that i can't compile . . .


#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
const double TAX_RATE = 0.0825;
double base_price,
tax,
price;

cout << setprecision(2)
<< setiosflags(ios::fixed)
<< setiosflags(ios::showpoint);

cout << "Enter the price of the item: ";
cin >> base_price;

tax = base_price * TAX_RATE;
price = base_price + tax;

cout << endl;
cout << "The base price is" << setw(11) << base_price << endl;
cout << "The tax is" << setw(18) << tax << endl;
cout << "The price is" << setw(16) << price << endl;

return 0;
}

the error is . . .


./dem02-1.cpp:32:2: warning: no newline at end of file
./dem02-1.cpp: In function ‘int main()’:
./dem02-1.cpp:16: error: expected primary-expression before ‘<<’ token


is this a missing library problem?

i have build-essential, libnet1-dev, libantlr-dev, libsdl1.2-dev installed.

thanks for any help.

[larrybrazos]

just compiled this with no errors . . .

so not sure what is wrong with that first one? :(


#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
const double SALES_TAX_RATE = 0.0825;

double meal_price,
sales_tax,
total,
amt_tendered,
change;

cout << setprecision(2)
<< setiosflags(ios::fixed)
<< setiosflags(ios::showpoint);

cout << "*** C++-Side Restaurant ***" << endl << endl;
cout << "Enter the price of the meal: $";
cin >> meal_price;
cout << endl;

sales_tax = meal_price * SALES_TAX_RATE;
total = meal_price + sales_tax;

cout << endl;
cout << "Price of meal: " << setw(6) << meal_price << endl;
cout << "Sales tax: " << setw(10) << sales_tax << endl;
cout << "----------------------------------" << endl;
cout << "Total amount: " << setw(7) << total << endl;

return 0;
}

[xtacocorex]

This line:


cout << setprecision(2)
<< setiosflags(ios::fixed)
<< setiosflags(ios::showpoint);

should be:

cout << setprecision(2) << setiosflags(ios::fixed) << setiosflags(ios::showpoint);

You can't start a line with just <<, the compiler output mentions this.

You also need to have a return line at the end of the file.

[larrybrazos]

thanks for the help . .

switched code to . . .


#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
const double TAX_RATE = 0.0825;
double base_price,
tax,
price;

cout << setprecision(2) << setiosflags(ios::fixed) << setiosflags(ios::showpoint);

cout << "Enter the price of the item: ";
cin >> base_price;

tax = base_price * TAX_RATE;
price = base_price + tax;

cout << endl;
cout << "The base price is" << setw(11) << base_price << endl;
cout << "The tax is" << setw(18) << tax << endl;
cout << "The price is" << setw(16) << price << endl;

return 0;
}


and i still get . . .


dem02-1.cpp:32:2: warning: no newline at end of file
dem02-1.cpp: In function ‘int main()’:
dem02-1.cpp:16: error: expected primary-expression before ‘<<’ token


as far as including new line at end of file, what do you mean by that?

[larrybrazos]

i'm sure i will look back at this post and blush a few months from now :redface:

[samjh]

:confused:

I can compile your code without a problem.

Completely baffled as to why you're getting that error.

[WW]

Actually, you can start a line with <<, but you can't start a statement with it. For example, this code compiles and runs fine:


#include <iostream>

using namespace std;

int main()
{
double x = 123.456;

cout << x
<< endl;
return 0;
}

However, if you inadvertently put in an extra semicolon, like this:


#include <iostream>

using namespace std;

int main()
{
double x = 123.456;

cout << x;
<< endl;
return 0;
}

you will get an error:


$ g++ mytest.cpp -o mytest
mytest.cpp: In function ‘int main()’:
mytest.cpp:10: error: expected primary-expression before ‘<<’ token

[samjh]

Larrybrazos,

I think this is a problem perculiar to your machine or gcc installation. As said before, I can compile your code fine.

Looks like you either forgot to save your code before compiling, or your gcc/g++ isn't parsing the source code properly. Try copy-pasting the code to a different file and compile that. Or else reinstall gcc/g++.

[larrybrazos]

thanks for the replies everyone, i haven't been able to test it yet, but i think you are on the right track samjh. i was working on the program then had to bounce and scite was open for nearly 12 hours before i sat down again and worked on it. so, i'll have to cut and past and save again and see what happens.