I want to activate c99 mode in gcc compiler to i read in other post in this forum that -std should be equal to -std=c99 but i don\'t know how to set it
-std
-std=c99
You may try to use the -std=c99 flag.
Try to complile like this:
gcc -Wall -std=c99 -g myProgram.c
Also note that -g is for debugging option(Thanks Alter Mann for pointing that).
-g