Compilare: main.cpp: In function 'int main()': main.cpp:26:104: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("radixsort.in","r",stdin),freopen("radixsort.out","w",stdout),scanf("%d%d%d%d",&n,&a,&b,&c); ^ main.cpp:26:104: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:26:104: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]