ratb.c: In function `main': ratb.c:9: warning: unused variable `nrnum' ratb.c:9: warning: unused variable `suma' ratb.c:10: warning: unused variable `h' ratb.c:11: warning: unused variable `n1' ratb.c:11: warning: unused variable `n2' ratb.c:11: warning: unused variable `n3' ratb.c:11: warning: unused variable `n4' ratb.c:11: warning: unused variable `n5' ratb.c:11: warning: unused variable `n6' ratb.c:10: warning: `r1' might be used uninitialized in this function ratb.c:10: warning: `r2' might be used uninitialized in this function