View Compilation Error

0_0_4002447_1897.cpp: In function `int comp(const void*, const void*)':
0_0_4002447_1897.cpp:7: error: expected primary-expression before "int"
0_0_4002447_1897.cpp:7: error: expected `)' before "int"
0_0_4002447_1897.cpp: In function `void segmen(char*)':
0_0_4002447_1897.cpp:80: error: `qsort' undeclared (first use this function)
0_0_4002447_1897.cpp:80: error: (Each undeclared identifier is reported only once for each function it appears in.)