View Compilation Error

0_0_20474603_7383.cpp:1:1: error: 'C' does not name a type
 C s[100001], b;
 ^
0_0_20474603_7383.cpp:2:1: error: 'D' does not name a type
 D ave;
 ^
0_0_20474603_7383.cpp:3:1: error: 'I' does not name a type
 I a[26];
 ^
0_0_20474603_7383.cpp:4:1: error: 'I' does not name a type
 I n, t, x, y, i, k, l, z, zz;
 ^
0_0_20474603_7383.cpp:5:1: error: 'I' does not name a type
 I sum, len;
 ^
0_0_20474603_7383.cpp:6:1: error: 'I' does not name a type
 I main(){
 ^