palindrom1.cpp: In function `int main()': palindrom1.cpp:19: `mod' undeclared (first use this function) palindrom1.cpp:19: (Each undeclared identifier is reported only once for each function it appears in.) palindrom1.cpp:34: `x' undeclared (first use this function) palindrom1.cpp:35: `y' undeclared (first use this function) palindrom1.cpp:43: `p1' undeclared (first use this function) palindrom1.cpp:44: `min' undeclared (first use this function) palindrom1.cpp:49: `mut' undeclared (first use this function) palindrom1.cpp:51: `d' undeclared (first use this function) palindrom1.cpp:63: `l' undeclared (first use this function)