View Compilation Error

0_0_26081703_25690.cpp: In function 'int main()':
0_0_26081703_25690.cpp:5:14: error: two or more data types in declaration of 'n'
   double int n,m;
              ^
0_0_26081703_25690.cpp:5:16: error: two or more data types in declaration of 'm'
   double int n,m;
                ^
0_0_26081703_25690.cpp:6:12: error: 'n' was not declared in this scope
 while(cin>>n>>m)
            ^
0_0_26081703_25690.cpp:6:15: error: 'm' was not declared in this scope
 while(cin>>n>>m)
               ^