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KwickClips Cyber Safety and Ethics · 41 sec · free

Which mode is used?

Short answer. Binary.

What gives the number of bytes?

sizeof.

Remember

Binary mode
Address as char*
sizeof gives the size

Can you save a whole student record at once? Yes. Open in binary mode. Write saves the bytes of object s. Read fills object t from the file. Use binary mode. Pass the address as a char pointer. Sizeof gives the size.

This clip is from the full lesson: File Handling in C++ — 7 minutes, with the tables, the quick answers and the whole lesson in text.

Useful for: NIOS Senior Secondary Computer Science (330), Programming All levels C++, Programming All levels C++

More KwickClips from this lesson

Table: ifstream read, ofstream write, fstream read and write.Which one writes?41 secC++ code ofstream out writing Riya 72, ifstream in reading n and m, m is 72.Which operator writes to a file?41 secTable: ios::out erases, ios::app adds at end, ios::in reads, ios::binary raw bytes.How do you keep old data?41 sec
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