231432_0_29832.cpp: In function `int main()':
231432_0_29832.cpp:7: error: conflicting declaration 'const float pi'
231432_0_29832.cpp:6: error: 'pi' has a previous declaration as `float pi'
231432_0_29832.cpp:7: error: declaration of `const float pi'
231432_0_29832.cpp:6: error: conflicts with previous declaration `float pi'
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