View Compilation Error

103297_0_15350.cpp:4: error: `maxn' was not declared in this scope
103297_0_15350.cpp:5: error: `maxn' was not declared in this scope
103297_0_15350.cpp:6: error: `maxn' was not declared in this scope
103297_0_15350.cpp: In function `void permute(int)':
103297_0_15350.cpp:14: error: `cout' undeclared (first use this function)
103297_0_15350.cpp:14: error: (Each undeclared identifier is reported only once for each function it appears in.)
103297_0_15350.cpp:14: error: `p' undeclared (first use this function)
103297_0_15350.cpp:15: error: `endl' undeclared (first use this function)
103297_0_15350.cpp:22: error: `used' undeclared (first use this function)
103297_0_15350.cpp:22: error: `e' undeclared (first use this function)