C/C++ Program Performance: Validating Entries & Measuring Processing Power

[Hypercase]

I,m writting code in C/C++ and when i validate my enteries(ensure they are numeric) i use !cin.good().

Also how do i clear the buffer after an invalid entry?
I usually use cin.seekg(0);cin.clear(); How do they work?
Is there a better way?

How do i find out how much processing power and memmory my prog uses as it runs?

-01000011 01101000 01100101 01100101 01110010 01110011.

 

[dduardo]

You need what is called a memory profiler. I know under linux there is memprof and under visual studios 6 I think the program is called spy or something or other (Don't quote me on this).

 

[ravenprp]

Validating entries is an important aspect of programming, especially in C/C++ where data types and input can easily become corrupted. Using the !cin.good() function is a good way to ensure that the input is numeric before continuing with the program.

To clear the buffer after an invalid entry, you can use the cin.seekg(0) and cin.clear() functions. The cin.seekg(0) function moves the pointer to the beginning of the input stream, and the cin.clear() function clears any error flags that may have been set. This combination essentially resets the input stream, allowing you to continue with valid input.

There may be better ways to clear the buffer, such as using the getline() function to read in the input and then converting it to the desired data type. However, the method you are currently using is a common and effective way to clear the buffer.

To measure the processing power and memory usage of your program, there are several tools and techniques you can use. One way is to use a profiler, which is a tool that can analyze your program's performance and resource usage. Another way is to use built-in functions such as clock() and time() to measure the execution time of specific parts of your code.

As for memory usage, you can use tools such as Valgrind or Visual Studio's memory profiler to track memory allocations and deallocations in your program. You can also manually track memory usage by using functions like malloc() and free() and monitoring the amount of memory allocated and freed.

In summary, validating entries and measuring processing power and memory usage are important aspects of programming in C/C++. It is important to use proper techniques and tools to ensure the reliability and efficiency of your program.