Compilare: user.cpp: In function ‘std::string findResult(char*)’: user.cpp:17:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < strlen(originalString); i++) { ^ user.cpp:22:90: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((originalString[i] != originalString[i-1]) || (i == strlen(originalString) - 1)) { ^ user.cpp:28:98: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( (originalString[i] != originalString[i - 1] ) && (i == strlen(originalString) - 1)) { ^ user.cpp: In function ‘int main()’: user.cpp:56:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(input,"%s",originalString); ^