View Compilation Error

0_0_33240809_20671.cpp: In function 'int main()':
0_0_33240809_20671.cpp:10:3: error: 'c0' was not declared in this scope
   c0[1]=a,c0[2]=b,c0[3]=c;
   ^
0_0_33240809_20671.cpp:11:3: error: 'n' was not declared in this scope
   n[1]=1,n[2]=2,n[3]=5;
   ^