View Compilation Error

0_0_27120660_26452.cpp: In function 'int main()':
0_0_27120660_26452.cpp:3:7: error: variable or field 'n' declared void
 {void n,m,i,sum;
       ^
0_0_27120660_26452.cpp:3:9: error: variable or field 'm' declared void
 {void n,m,i,sum;
         ^
0_0_27120660_26452.cpp:3:11: error: variable or field 'i' declared void
 {void n,m,i,sum;
           ^
0_0_27120660_26452.cpp:3:13: error: variable or field 'sum' declared void
 {void n,m,i,sum;
             ^
0_0_27120660_26452.cpp:4:20: error: 'n' was not declared in this scope
 while((scanf("%d",&n)!=EOF)&&(n!=0))
                    ^
0_0_27120660_26452.cpp:5:2: error: 'sum' was not declared in this scope
 {sum=0;
  ^
0_0_27120660_26452.cpp:6:1: error: 'i' was not declared in this scope
 i=1;
 ^
0_0_27120660_26452.cpp:8:14: error: 'm' was not declared in this scope
 {scanf("%d",&m);
              ^