Compilare: main.cpp: In function 'int main()': main.cpp:141:26: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(ecc, 1001, fin); ^ main.cpp:142:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ main.cpp:144:24: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(sw, n+1, fin); ^ main.cpp: In function 'int Paranteza(int)': main.cpp:109:17: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] y=(y+no)%2; ~~^~~~ main.cpp:133:14: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] x=x&y; ~^~~~