/tmp/cc4ut6qS.o: In function `main':
rational.c:(.text.startup+0x0): multiple definition of `main'
/tmp/ccRWy8rn.o:wtmsb.c:(.text.startup+0x0): first defined here
/tmp/ccRWy8rn.o: In function `Term':
wtmsb.c:(.text+0x2f5): undefined reference to `divide'
wtmsb.c:(.text+0x33c): undefined reference to `multiply'
/tmp/ccRWy8rn.o: In function `Exp':
wtmsb.c:(.text+0x3a5): undefined reference to `subtract'
wtmsb.c:(.text+0x3ec): undefined reference to `add'
/tmp/ccRWy8rn.o: In function `main':
wtmsb.c:(.text.startup+0xac): undefined reference to `print'
collect2: error: ld returned 1 exit status