View Compilation Error

0_0_6071172_3022.cpp: In function `void read(int, int)':
0_0_6071172_3022.cpp:55: error: `sca' undeclared (first use this function)
0_0_6071172_3022.cpp:55: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6071172_3022.cpp:55: error: expected `;' at end of input
0_0_6071172_3022.cpp:55: error: expected `}' at end of input
0_0_6071172_3022.cpp:55: error: expected `}' at end of input