Compilare: main.cpp: In function 'int main()': main.cpp:35:21: warning: unused variable 'nr' [-Wunused-variable] int n=0,i,j,x=0,nr,tait=0,sn; ^~ main.cpp:33:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("compresie.in","r",stdin); ^ main.cpp:34:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("compresie.out","w",stdout); ^ main.cpp:36:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s",s); ^