View Compilation Error

0_0_27598149_9675.cpp: In function 'int main()':
0_0_27598149_9675.cpp:9:24: error: size of array 'grd' has non-integral type 'double'
         double grd[n][m] = {0.0};
                        ^
0_0_27598149_9675.cpp:9:24: error: size of array 'grd' has non-integral type 'double'
0_0_27598149_9675.cpp:10:19: error: size of array 'x' has non-integral type 'double'
         double x[n] = {0.0}, y[m] = {0.0};
                   ^
0_0_27598149_9675.cpp:10:33: error: size of array 'y' has non-integral type 'double'
         double x[n] = {0.0}, y[m] = {0.0};
                                 ^