Compilare: user.cpp: In function ‘bool merji(double)’: user.cpp:36:12: warning: unused variable ‘last’ [-Wunused-variable] double last = 0; ^ user.cpp: In function ‘int main()’: user.cpp:71:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d", &n, &a, &b); ^ user.cpp:76:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v[i].c); ^ user.cpp:80:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v[i].t); ^