View Compilation Error

0_0_32651006_23832.c:7:1: error: expected identifier or '(' before '/' token
 // @category: [matrix]
 ^
0_0_32651006_23832.c:7:4: error: stray '@' in program
 // @category: [matrix]
    ^
0_0_32651006_23832.c:8:4: error: stray '@' in program
 // @difficulty: [easy]
    ^
0_0_32651006_23832.c:10:20: fatal error: iostream: No such file or directory
 #include <iostream>
                    ^
compilation terminated.