Write a C program that does something interesting or useful then compile it with -S and inspect the assembly. I am a beginner at assembly and learned everythin

Write a C program that does something interesting or useful then compile it with -S and inspect the assembly. I am a beginner at assembly and learned everything from GCC. There's so many details. I learned about rbp+rsp registers recently. And from Reddit post on the compiler someone told me I need to keep the stack aligned.