View Compilation Error

0_0_21315166_13113.c:6:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'void'
 inline void swap(int *a ,int * b)
        ^
0_0_21315166_13113.c:13:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'int'
 inline int partion(int a[],int p,int r)
        ^
0_0_21315166_13113.c:27:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'int'
 inline int select(int a[],int p,int r,int k)
        ^
0_0_21315166_13113.c: In function 'main':
0_0_21315166_13113.c:43:1: error: expected expression before '/' token
 //   freopen("output.txt","w",stdout);
 ^
0_0_21315166_13113.c:67:11: error: expected expression before '/' token
           //  return z;
           ^
0_0_21315166_13113.c:79:11: error: expected expression before '/' token
           //  nth_element(e,e+q[i],e+len);
           ^
0_0_21315166_13113.c:83:10: error: expected expression before '/' token
          //   q[i]=e[q[i]];
          ^