Encrypt/Decrypt File With OpenSSL C++

I need to encrypt and decrypt files using the openssl library in C++. I use the following for encryption to run in shell: commandToRun = "openssl enc -aes-256-ctr -pbkdf2 -salt -in "; commandToRun += in_fileToEncrypt; commandToRun += " -out "; commandToRun += in_fileToEncrypt; commandToRun += ".enc -pass pass:"; commandToRun += in_password; I use the following for decryption to run in shell: commandToRun = "openssl enc -aes-256-ctr -pbkdf2 -salt -d -in "; commandToRun += in_fileToDecrypt; commandToRun += ".enc -out "; commandToRun += in_fileToDecrypt; commandToRun += " -pass pass:"; commandToRun += in_password; These two methods use the openssl binary but I need code that does it in C++ directly using the openssl library. Code needs to be in C++ and will run on Debian 10 Linux.