Compilare: user.cpp: In function ‘int main()’: user.cpp:9:29: warning: unused variable ‘c’ [-Wunused-variable] int n, s, t, pz, u, cost, c, p; ^ user.cpp:12:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d", &n, &s, &t); ^ user.cpp:16:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &cost, &p); ^