Usestd::mapto Store Multiple Callback Functions With Corresponding Keys in C++ A common way of using callback functions is to store them in the data structure likevectorormap, from which we can easily access each one of them and call the specific function during program run-time. In this ...
Let’s now look at some examples, to understand this function better. We’ll also be usingfork()along withexecvp(), so that we can still have our C program with us! Using execvp() in C / C++ - Some Examples If you want to see what exactly happens if you try to useexecvp()withou...
Use One of theexecFunctions to Execute a New Program in Child Process in C One of the common cases for using theforkfunction is to execute a new program in the child process, which can be accomplished by adding one of theexecfunctions to the mix. In this case, we implemented a separate...
In terms of safety, functions in the C standard library also have an associated error code. In the case offread(), an error code of 0 indicates that the required number of items (in bytes) was not read. This code can be used to handle errors related to corrupt or incomplete data sets...
Example # 03: Using the printf() Function to Print an Integer and Float Variable in the C Programming Language Now let us see how to use printf() and different format specifiers for additional arguments of different data types in a single printf() and scanf() functions. 2 variables are de...
Example 9 – Using the PRODUCT Function to Multiply Two or More Outputs of the VLOOKUP Function We can use the PRODUCT function along with the VLOOKUP Function. Steps: In cell E5, enter the following formula: =PRODUCT(VLOOKUP(H5,$B$5:$C$12,2,0), VLOOKUP(H5,$E$5:$F$12,2,0)) ...
1. Call C functions from C++ In this section we will discuss on how to call C functions from C++ code. Here is the C code (Cfile.c): #include <stdio.h> void f(void) { printf("\n This is a C code\n"); } The first step is to create a library of this C code. The follow...
Using the IF with AND / OR Functions in Microsoft Excel: These logical functions are used to carry out multiple criteria calculations. With IF the OR and AND functions are used to include or exclude matches. Popular Articles : How to use the IF Function in Excel: The IF statement in Excel...
We will use the combination of theMAXfunction and theIFfunction. In general, theMAX IFformula returns the largest numeric value that satisfies one or more criteria in a given range of numbers, dates, texts, and other conditions. After combining these two functions, we get a generic formula ...
3. Things to knowThe SUMPRODUCT function is one of the most powerful functions in Excel and is one that I often use. I highly recommend learning how it works.The SUMPRODUCT function requires you to enter it as a regular formula, not an array formula. However, there are exceptions. If ...