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View Compilation Error

0_0_23258739_9088.cpp: In function 'int main()':
0_0_23258739_9088.cpp:14:1: error: 'doublea1' was not declared in this scope
 doublea1,b1,a2,b2,c1,d1,c2,d2,a,b,c,d;
 ^
0_0_23258739_9088.cpp:14:10: error: 'b1' was not declared in this scope
 doublea1,b1,a2,b2,c1,d1,c2,d2,a,b,c,d;
          ^
0_0_23258739_9088.cpp:14:13: error: 'a2' was not declared in this scope
 doublea1,b1,a2,b2,c1,d1,c2,d2,a,b,c,d;
             ^
0_0_23258739_9088.cpp:14:16: error: 'b2' was not declared in this scope
 doublea1,b1,a2,b2,c1,d1,c2,d2,a,b,c,d;
                ^
0_0_23258739_9088.cpp:14:19: error: 'c1' was not declared in this scope
 doublea1,b1,a2,b2,c1,d1,c2,d2,a,b,c,d;
                   ^
0_0_23258739_9088.cpp:14:22: error: 'd1' was not declared in this scope
 doublea1,b1,a2,b2,c1,d1,c2,d2,a,b,c,d;
                      ^
0_0_23258739_9088.cpp:14:25: error: 'c2' was not declared in this scope
 doublea1,b1,a2,b2,c1,d1,c2,d2,a,b,c,d;
                         ^
0_0_23258739_9088.cpp:14:28: error: 'd2' was not declared in this scope
 doublea1,b1,a2,b2,c1,d1,c2,d2,a,b,c,d;
                            ^
0_0_23258739_9088.cpp:14:31: error: 'a' was not declared in this scope
 doublea1,b1,a2,b2,c1,d1,c2,d2,a,b,c,d;
                               ^
0_0_23258739_9088.cpp:14:33: error: 'b' was not declared in this scope
 doublea1,b1,a2,b2,c1,d1,c2,d2,a,b,c,d;
                                 ^
0_0_23258739_9088.cpp:14:35: error: 'c' was not declared in this scope
 doublea1,b1,a2,b2,c1,d1,c2,d2,a,b,c,d;
                                   ^
0_0_23258739_9088.cpp:14:37: error: 'd' was not declared in this scope
 doublea1,b1,a2,b2,c1,d1,c2,d2,a,b,c,d;
                                     ^
0_0_23258739_9088.cpp:18:12: error: 'a1' was not declared in this scope
 while(cin>>a1>>b1>>a2>>b2>>c1>>d1>>c2>>d2)
            ^
0_0_23258739_9088.cpp:154:1: error: 'return0' was not declared in this scope
 return0;
 ^


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