View Compilation Error

0_0_35762148_18961.cpp:5:11: error: 'k' was not declared in this scope
 int k_min(k[],n)//在一个数组中找出差值最小的两个数，并返回最小差值的绝对值
           ^
0_0_35762148_18961.cpp:5:13: error: expected primary-expression before ']' token
 int k_min(k[],n)//在一个数组中找出差值最小的两个数，并返回最小差值的绝对值
             ^
0_0_35762148_18961.cpp:5:15: error: 'n' was not declared in this scope
 int k_min(k[],n)//在一个数组中找出差值最小的两个数，并返回最小差值的绝对值
               ^
0_0_35762148_18961.cpp:5:16: error: expression list treated as compound expression in initializer [-fpermissive]
 int k_min(k[],n)//在一个数组中找出差值最小的两个数，并返回最小差值的绝对值
                ^
0_0_35762148_18961.cpp:6:1: error: expected ',' or ';' before '{' token
 {
 ^