prog.c:9:8: warning: extra tokens at end of #endif directive [-Wendif-labels]
#endif OPENMP
^~~~~~
prog.c: In function ‘main’:
prog.c:13:5: warning: implicit declaration of function ‘test’ [-Wimplicit-function-declaration]
test(a,b);
^~~~
prog.c:13:5: warning: ‘a’ is used uninitialized in this function [-Wuninitialized]
test(a,b);
^~~~~~~~~
/home/bZ7Qaa/ccM3fTQM.o: In function `main':
prog.c:(.text.startup+0xe): undefined reference to `test'
collect2: error: ld returned 1 exit status