Compilare: user.cpp:45:65: warning: multi-character character constant [-Wmultichar] if(X == 0 && s[p] == 'x' && (p == 1|| p == 2 && s[0] == '- ')) ^ user.cpp: In function ‘int main()’: user.cpp:21:25: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if ( X == 0 && p == 0|| (X == 0 && p == 1 && s[0] == '-') ) ^ user.cpp:45:44: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(X == 0 && s[p] == 'x' && (p == 1|| p == 2 && s[0] == '- ')) ^ user.cpp:9:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ecuatii2.in", "r", stdin); ^ user.cpp:10:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ecuatii2.out", "w", stdout); ^ user.cpp:11:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:13:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", s); ^