patrate2.cpp: In function `int piv(int, int)': patrate2.cpp:9: warning: `bool ok' might be used uninitialized in this function patrate2.cpp: In function `int main()': patrate2.cpp:42: warning: int format, long int arg (arg 2) patrate2.cpp:66: warning: int format, long int arg (arg 2) patrate2.cpp:66: warning: int format, long int arg (arg 3)