forcpp: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/forcpp - from package: Canna

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/forcpp - from package: Canna

You may install the required package with command apt-get install {package}

Error in other languages:
forcpp: bevel nie gevind nie
forcpp: comandă negăsită
forcpp: comando não encontrado
forcpp: commande introuvable
forcpp: command not found
forcpp: käsku ei ole
forcpp: không tìm thấy lệnh
forcpp: komanda nerasta
forcpp: Kommando nicht gefunden.
forcpp: kommandot finns inte
forcpp: komut yok
forcpp: nie znaleziono polecenia
forcpp: níor aimsíodh an t-ordú
forcpp: no se encontró la orden
forcpp: no s'ha trobat l'ordre
forcpp: opdracht niet gevonden
forcpp: parancs nem található
forcpp: perintah tidak ditemukan
forcpp: príkaz nenájdený
forcpp: příkaz nenalezen
forcpp: команда не найдена
forcpp: командата не е открита
forcpp: 命令找不到
forcpp: コマンドが見つかりません