Thread: I'm totally a newbie

Hi to everyone I'm a total newbie but willing to learn, I'm taking Video Game Programming starting January but I want to get ahead since my C++ classes are until next semester so I want to learn some on my own I finished some exercises but this last one can't figure it out

Code:

//Programmer: Fernando B
//Program: debug
//Purpose: debugging

#include <iostream>
#include <string>

using namespace std;

int mian ()
{
    string str = "Hello World!";

    cout << str << endl;

    cout << float x = 5.0f * str << endl;

    int 65Num = 65;

    cout << "65Num = " << 65Num << endl;

}

C:\Users\owner\cpp programmin\exercise 1.6.6 bug fixing.cpp||In function `int mian()':|
C:\Users\owner\cpp programmin\exercise 1.6.6 bug fixing.cpp|16|error: expected primary-expression before "float"|
C:\Users\owner\cpp programmin\exercise 1.6.6 bug fixing.cpp|16|error: expected `;' before "float"|
C:\Users\owner\cpp programmin\exercise 1.6.6 bug fixing.cpp|18|invalid suffix "Num" on integer constant|
C:\Users\owner\cpp programmin\exercise 1.6.6 bug fixing.cpp|18|error: expected unqualified-id before numeric constant|
C:\Users\owner\cpp programmin\exercise 1.6.6 bug fixing.cpp|20|invalid suffix "Num" on integer constant|
||=== Build finished: 5 errors, 0 warnings ===|

I spotted a few typos and the mian instead of main, I think the float variable needs to be declared prior to using in cout not quite since the instructions just say run it and try to fix based on the errors. Thanks a lot oh I almost forgot using code::blocks if it matters.

Here is a solution to your problem. Please read the in-code comments as they explain the changes that were made to your code.

Code:

//Programmer: Fernando B
//Program: debug
//Purpose: debugging

#include <iostream>
#include <string>

using namespace std;

int main () //Corrected spelling error
{
	string str = "Hello World!";

	cout << str << endl;

	//Deprecated/incorrect code
	//cout << float x = 5.0f * str << endl;

	float x = 5.0f; //Needed to declare the float before outputting it

	cout << x << " " << str << endl; // Unsure how you were trying to output using your previous code but this will output the float followed by a space, followed by a string
    
	//The compiler does not like it when variables begin with numbers; I changed it to work correctly
	int Num65 = 65;

        cout << "Num65 = " << Num65 << endl;

	//For the sake of seeing the output of the application, we will ask it to pause until a key is pressed
	system( "pause" );

	//We are within a function (int main) that has a return type. This return type is an integer. Therefore, we must obide and return an int:
	return 0;
}

Good work, but keep practicing! Don't be afraid to try out different things and see what the compiler says (you mentioned that you thought that the float declaration should have been before the output statement; you should have tested it out! Assignments also need to be written before the output statement, not within!) Remember, the compiler is your friend....mostly

Thanks for the quick reply about this line

Code:

//cout << float x = 5.0f * str << endl;

Do you think that is possible they were trying to multiply the str by the float is that possible? because I honestly don't see what the multiplier operator is doing there.

Since multiplying five and a string like "Hello World" would not make sense anyway, I think the problem is less about what should have happened, and more about your ability to read compiler digests, and play spot the problem.

Also, I would like to say that deprecated has a specific meaning unrelated to the word incorrect, and that there is nothing deprecated about that line, or in the entire program.

Got it thank you guys for your help.

No worries