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0_0_21812319_28287.cpp:10:10: error: size of array 's1' has non-integral type 'double'
 char s1[N], p1[N];
          ^
0_0_21812319_28287.cpp:10:17: error: size of array 'p1' has non-integral type 'double'
 char s1[N], p1[N];
                 ^
0_0_21812319_28287.cpp:11:10: error: size of array 's' has non-integral type 'double'
 char s[N ], p[N];
          ^
0_0_21812319_28287.cpp:11:16: error: size of array 'p' has non-integral type 'double'
 char s[N ], p[N];
                ^
0_0_21812319_28287.cpp:12:14: error: size of array 'nextval' has non-integral type 'double'
 int nextval[N];
              ^