Compilare: user.c: In function ‘main’: user.c:27:5: warning: format ‘%d’ expects argument of type ‘int *’, but argument 3 has type ‘short int *’ [-Wformat=] scanf("%d %d",&N,&K); ^ user.c:54:17: warning: implicit declaration of function ‘realloc’ [-Wimplicit-function-declaration] val = (int*)realloc(val,E*sizeof(int)); ^ user.c:54:29: warning: incompatible implicit declaration of built-in function ‘realloc’ [enabled by default] val = (int*)realloc(val,E*sizeof(int)); ^