Compilare: main.cpp: In function 'int main()': main.cpp:48:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &s); ^ main.cpp:50:50: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for (i=1; i<=n; i++) fscanf(fin, "%d", &a[i]); ^