View Compilation Error

0_0_16666515_29629.c:2:1: error: unknown type name 'using'
 using namespace std;  
 ^
0_0_16666515_29629.c:2:17: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'std'
 using namespace std;  
                 ^
0_0_16666515_29629.c: In function 'main':
0_0_16666515_29629.c:16:12: error: 'cin' undeclared (first use in this function)
     while (cin>>m)   
            ^
0_0_16666515_29629.c:16:12: note: each undeclared identifier is reported only once for each function it appears in
0_0_16666515_29629.c:19:9: error: 'cout' undeclared (first use in this function)
         cout<<f(m)<<endl;  
         ^
0_0_16666515_29629.c:19:21: error: 'endl' undeclared (first use in this function)
         cout<<f(m)<<endl;  
                     ^