Compilare: main.cpp: In function 'int main()': main.cpp:11:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (signed int i = 0; i <= strlen(s) - 2; i++) ~~^~~~~~~~~~~~~~~~ main.cpp:16:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (signed int j = i + 1; j <= strlen(s) - 1 && nrParanteze; j++) ~~^~~~~~~~~~~~~~~~ main.cpp:10:24: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(s, 1000001, cin); ^