Compilare: main.cpp: In function 'int main()': main.cpp:13:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<strlen(a)) ~^~~~~~~~~~ main.cpp:8:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sr.in","r",stdin); ^ main.cpp:9:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sr.out","w",stdout); ^ main.cpp:10:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s",a); ^ main.cpp:11:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s",b); ^