Compilare: user.c: In function ‘main’: user.c:17:5: warning: implicit declaration of function ‘malloc’ [-Wimplicit-function-declaration] a = (mlong*)malloc(n * sizeof(mlong)); ^ user.c:17:17: warning: incompatible implicit declaration of built-in function ‘malloc’ [enabled by default] a = (mlong*)malloc(n * sizeof(mlong)); ^ user.c:21:9: warning: format ‘%d’ expects argument of type ‘int *’, but argument 4 has type ‘mlong *’ [-Wformat=] fscanf(fin, "%Ld %d", a + i, b + i); ^