Compilare: main.cpp: In function 'bool factor()': main.cpp:52:22: warning: suggest parentheses around assignment used as truth value [-Wparentheses] val = sir[p] = '0'; ~~~~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:62:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("bool.in", "r", stdin); ^ main.cpp:63:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("bool.out", "w", stdout); ^ main.cpp:113:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d ", &q); ^ main.cpp:115:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%c", &ch); ^ main.cpp: In function 'bool factor()': main.cpp:42:10: warning: 'semn' may be used uninitialized in this function [-Wmaybe-uninitialized] semn %= 2; ~~~~~^~~~ main.cpp: In function 'int main()': main.cpp:101:23: warning: 'cuv' may be used uninitialized in this function [-Wmaybe-uninitialized] i += cuv; ~~^~~~~~