CPC aur IPC ki saamanya bhaashaa mein samasya hui, kya main galat hoon?

Maine abhi IPC ki section 300 par study ki thi aur mujhe lagta hai ki wahan pe CPC ki section 100 ki baat hui hai. Lekin maine socha ki CPC IPC se alag hi hai aur usme kuch aur cheezein hain. Ab main confuse ho gaya hoon ki IPC mein 23 chapters hain aur har chapter mein kuch section hain aur CPC mein bhi 395 sections hain aur CPC ki sections IPC ki sections se galat hain. Main samajh nahin sakta hoon ki IPC kya hain, CPC kya hain aur inka relation kya hai? Kya main kuch galat samajh raha hoon? Koi please explanation de.