Compilare: user.c:28: warning: return type defaults to 'int' user.c:47: warning: return type defaults to 'int' user.c: In function 'solve1': user.c:29: warning: 'pos' may be used uninitialized in this function user.c: In function 'solve2': user.c:48: warning: 'pos' may be used uninitialized in this function user.c: In function 'solve': user.c:29: warning: 'pos' may be used uninitialized in this function user.c:29: note: 'pos' was declared here user.c:48: warning: 'pos' may be used uninitialized in this function user.c:48: note: 'pos' was declared here