Compilare: main.cpp: In function 'void sort1(FILE*, FILE*, int, int)': main.cpp:9:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d ", &v[i]); ^ main.cpp: In function 'int main()': main.cpp:46:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d ", &tst); ^ main.cpp:50:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &n, &k); ^