sdcc-sdcpp: 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/sdcc-sdcpp - from package: sdcc

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

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