View Compilation Error

0_0_5544473_695.cpp: In function `int main()':
0_0_5544473_695.cpp:26: error: `d' undeclared (first use this function)
0_0_5544473_695.cpp:26: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5544473_695.cpp:26: error: expected `;' before '}' token