View Compilation Error

0_0_17162007_17604.c: In function 'main':
0_0_17162007_17604.c:5:2: error: expected expression before '/' token
  //char s1[100]="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
  ^
0_0_17162007_17604.c:6:5: error: expected expression before '/' token
     //char s2[100]="VWXYZABCDEFGHIJKLMNOPQRSTU";
     ^
0_0_17162007_17604.c:15:4: error: expected ';' before 'for'
    for(int i=0;i<len;i++)
    ^