View Compilation Error

0_0_1445983_989.cpp: In function `int generator(int)':
0_0_1445983_989.cpp:77: error: `j' undeclared (first use this function)
0_0_1445983_989.cpp:77: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1445983_989.cpp:77: error: `posnum1' undeclared (first use this function)