View Compilation Error

0_0_1671951_15885.cpp:1: error: invalid token
0_0_1671951_15885.cpp:1: error: expected constructor, destructor, or type conversion before "include"
0_0_1671951_15885.cpp:1: error: expected `,' or `;' before "include"
0_0_1671951_15885.cpp: In function `int main()':
0_0_1671951_15885.cpp:12: error: `scanf' undeclared (first use this function)
0_0_1671951_15885.cpp:12: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1671951_15885.cpp:12: error: `EOF' undeclared (first use this function)
0_0_1671951_15885.cpp:16: error: `qsort' undeclared (first use this function)
0_0_1671951_15885.cpp:34: error: expected primary-expression before ';' token
0_0_1671951_15885.cpp:42: error: `printf' undeclared (first use this function)