src.c:14:5: error: conflicting types for 'hn'
int hn (float m,float n)
^
src.c:4:6: note: previous declaration of 'hn' was here
{int hn (float m,int n);
^
src.c:27:5: error: conflicting types for 'sn'
int sn (float a,float b)
^
src.c:5:5: note: previous declaration of 'sn' was here
int sn (float a,int b);
^