Compilare: main.cpp: In function 'void func(FILE*, FILE*)': main.cpp:13:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < t; i++) ~~^~~ main.cpp:12:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(iFILE, "%d", &t); ^ main.cpp:15:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(iFILE, "%d %d", &n, &p); ^