View Compilation Error

0_0_32891315_8444.cpp: In function 'int main()':
0_0_32891315_8444.cpp:5:6: error: declaration of 'auto a' has no initializer
 auto a, b;
      ^
0_0_32891315_8444.cpp:5:9: error: declaration of 'auto b' has no initializer
 auto a, b;
         ^