Thread: what is the output

then the compiler will tell nothing,but i is uninitialized

Actually my compiler tells me about using uninitialized variables.

main.c||In function ‘main’:|
main.c|4|warning: variable ‘a’ set but not used [-Wunused-but-set-variable]|
main.c|5|warning: ‘i’ is used uninitialized in this function [-Wuninitialized]|
||=== Build finished: 0 errors, 2 warnings ===|

Jim

Originally Posted by jimblumberg

Actually my compiler tells me about using uninitialized variables.
Jim

I suppose then it is up to the compilers and the versions of it.I compile it in a Linux with an old i would say compiler