Compilare: main.cpp: In function 'int main()': main.cpp:10:11: warning: unused variable 'i' [-Wunused-variable] int n,i,j,len,nr=0,potriv; ^ main.cpp:8:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("triopalindrom.in","r",stdin); ^ main.cpp:9:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("triopalindrom.out","w",stdout); ^ main.cpp:11:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s",s); ^