test3.c: In function ‘main’:
test3.c:5:4: warning: implicit declaration of function ‘PrInTfLaLaLa’
/tmp/ccSIYqb4.o: In function `main':
test3.c:(.text+0x11): undefined reference to `PrInTfLaLaLa'
collect2: ld returned 1 exit status