Compilare: user.cpp: In function ‘int inc(int&)’: user.cpp:25:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:76:22: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(a && inter(a,v[i].x,v[i].y) || inter(a,v[i].x+w,v[i].y) || inter(a,v[i].x,v[i].y+h) || inter(a,v[i].x+w,v[i].y+h)) {ok=1;break;} ^ user.cpp:53:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("harta2.in", "r", stdin); ^ user.cpp:54:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("harta2.out", "w", stdout); ^ user.cpp:55:33: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(pars,1,10000000,stdin); ^