Our Environment We will exercise on Microsoft Visual

Our Environment We will exercise on Microsoft Visual C++ v. 6 n because that is what we have in the univ. n but there are many free compilers, too. n

Visual C++ (v 6)

Visual C++ (v 6) New. . Ctrl+N

Visual C++ (v 6) project title (name of. exe) Project and file directory Choose: “Win 32 Console Application”

Visual C++ (v 6)

Visual C++ (v 6) New source file will be included in the project

Visual C++ (v 6) Choose: “c++ source file” Give a file name with extension. c

Visual C++ (v 6) Write your program here

Visual C++ (v 6) Compile the C file

Visual C++ (v 6) Build an executable (. exe) file.

Visual C++ (v 6) Run the executable file (. exe). When this menu is selected, even if the compiling was not complete, it will re-compile. Error and warning messags will be here.

Visual C++ (v 6) Program output and interface at DOS prompt.

Visual C++ (v 6) Open a previously created project.

Visual C++ (v 6)

Compiler structure

Program generation steps

Error investigation There is a variable which is forgotten to be declared before used. By double clicking on the error message, you can go to the line containing the error.

Debugging Add an integer variable with name “a”

Linker errors A function with name “print” is not defined.

The correct one should be printf

Execution error

The correct usage of printf for writing out numbers

Debugger

Until now, you should have encountered programming mistakes. Use debugger: Build->set active configuration-> win 32 debug

Insert breakpoint Chose line Start debugging with “F 5” or Build->Start Debug->Go Put break point

Debug screen Debug toolbar Current running line Functions Stack Variables watching

Run line by pressing “F 10” or clicking this button Trace variable values here

Move mouse over the variable name, and see the current values

To execute and skip to the next breakpoint, press “F 5”