call function from separate bash script

To call a C++ function from a separate Bash script, follow these steps:

1. Write the C++ code: Create a C++ program with the function you want to call. Save it in a file, let's call it myprogram.cpp.

```cpp #include

void myFunction() { std::cout << "Hello from myFunction!" << std::endl; }

int main() { // Your main program logic here return 0; } ```

1. Compile the C++ code: Use a C++ compiler like g++ to compile the program into an executable file. In the terminal, run:

bash g++ myprogram.cpp -o myprogram

This command compiles myprogram.cpp and creates an executable file named myprogram.

1. Create the Bash script: Now, create a Bash script (let's name it runcpp.sh) to call the compiled C++ program.

```bash #!/bin/bash

./myprogram ```

This script runs the compiled C++ program (myprogram) when executed.

1. Set permissions: Make the Bash script executable using the chmod command:

bash chmod +x runcpp.sh

This command grants execution permission to the script.

1. Run the Bash script: Execute the Bash script to call the C++ function.

bash ./runcpp.sh

Running this command will execute the Bash script, which in turn executes the compiled C++ program and calls the myFunction function.

Ensure that all file names and paths are accurate, and the necessary permissions are set to execute the script and compiled program.