Compilare: user.cpp: In function ‘int main()’: user.cpp:107:30: warning: format ‘%s’ expects argument of type ‘char*’, but argument 4 has type ‘char (*)[30]’ [-Wformat=] fscanf(f, "%d %s", &p, &w); ^ user.cpp:115:32: warning: format ‘%s’ expects argument of type ‘char*’, but argument 4 has type ‘char (*)[30]’ [-Wformat=] fscanf(f, "%d %s", &p, &w); ^ user.cpp:107:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %s", &p, &w); ^ user.cpp:115:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %s", &p, &w); ^