Compilare: main.cpp: In function 'int main()': main.cpp:133:26: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(ecc, 1001, fin); ^ main.cpp:134:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ main.cpp:136:24: 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:101:17: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] y=(y+1)%2; ~~^~~ main.cpp:125:14: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] x=x&y; ~^~~~