Compilare: user.c: In function 'main': user.c:25: warning: format '%d' expects type 'int *', but argument 2 has type 'int' user.c:25: warning: format '%d' expects type 'int *', but argument 3 has type 'int' user.c:25: warning: 'a' is used uninitialized in this function user.c:25: warning: 'b' is used uninitialized in this function