View Compilation Error

0_0_3790565_21241.cpp: In function `int main()':
0_0_3790565_21241.cpp:7: error: conflicting declaration 'double k'
0_0_3790565_21241.cpp:6: error: 'k' has a previous declaration as `int k'
0_0_3790565_21241.cpp:7: error: declaration of `double k'
0_0_3790565_21241.cpp:6: error: conflicts with previous declaration `int k'