Compilare: user.cpp: In function ‘int main()’: user.cpp:89:50: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(F, "%d %d %d %d ", &n, &m, &u, &tinta); ^ user.cpp:92:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(F, "%d ", &x), start[i] = x; ^ user.cpp:96:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(F, "%d %d ", &x, &y); ^