View Compilation Error

22037_0_184.cpp: In function `int main()':
22037_0_184.cpp:45: error: `data' undeclared (first use this function)
22037_0_184.cpp:45: error: (Each undeclared identifier is reported only once for each function it appears in.)
22037_0_184.cpp:45: error: `d' undeclared (first use this function)
22037_0_184.cpp:53: error: `data' has not been declared
ing C