Course Questions

Q: The output has only 19 bytes even though the name array has the size of 20 bytes, why is that?

Hello, Good question that is because we use a NULL terminator which is basically a byte thats equal to zero. This is what tells printf that a string has ended. When ever you define a string in C a NULL terminator is automatically prepended in memory. For example if we did printf("Hello"); the Hello looks like this in memory 'H', 'e', 'l', 'l, 'o', 0x00 Does that answer your question?

Q: Thanks, how can I output the string "ABC" from the listing in the code ? int a = 0x414243; char* ptr = (char*) &a;

Hello, Intel/AMD follow the little endianess rules so you cant specify ABC like that in an integer of "a", this is the correct integer to have ABC: int a = 0x00434241; following little endianess rules Thanks

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Questions

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Why we need to cast the buf since it's already a char? wouldn't work the same without the (const char*)?

Panagiotis Giannou Const Keyword Explained 0 answers

Open

The output has only 19 bytes even though the name array has the size of 20 bytes, why is that?

Yu Zhou Receiving input from the keyboard 1 answer

Answered

Thanks, how can I output the string "ABC" from the listing in the code ? int a = 0x414243; char* ptr = (char*) &a;

Aymen Marouani Casting 1 answer

Answered