Compilare: user.c: In function ‘main’: user.c:10:2: warning: implicit declaration of function ‘malloc’ [-Wimplicit-function-declaration] v = (int*)(malloc(n * sizeof(int))); ^ user.c:10:13: warning: incompatible implicit declaration of built-in function ‘malloc’ [enabled by default] v = (int*)(malloc(n * sizeof(int))); ^ user.c:9:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fp, "%d", &n); ^ user.c:15:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fp, "%d", &v[i]); ^