foo.cpp:74:2: error: stray '#' in program
 }#include<cstdio>
  ^
foo.cpp:74:3: error: 'include' does not name a type
 }#include<cstdio>
   ^
foo.cpp:81:18: error: redefinition of 'double a [102][102]'
 double a[102][102];
                  ^
foo.cpp:8:8: note: 'double a [102][102]' previously declared here
 double a[102][102];
        ^
foo.cpp:82:5: error: redefinition of 'int i'
 int i, j, n;
     ^
foo.cpp:9:5: note: 'int i' previously declared here
 int i, j, n;
     ^
foo.cpp:82:8: error: redefinition of 'int j'
 int i, j, n;
        ^
foo.cpp:9:8: note: 'int j' previously declared here
 int i, j, n;
        ^
foo.cpp:82:11: error: redefinition of 'int n'
 int i, j, n;
           ^
foo.cpp:9:11: note: 'int n' previously declared here
 int i, j, n;
           ^
foo.cpp: In function 'void swap(int, int)':
foo.cpp:84:6: error: redefinition of 'void swap(int, int)'
 void swap(int x, int y)
      ^
foo.cpp:11:6: note: 'void swap(int, int)' previously defined here
 void swap(int x, int y)
      ^
foo.cpp: In function 'void elimate(int, int)':
foo.cpp:93:6: error: redefinition of 'void elimate(int, int)'
 void elimate(int x, int y)
      ^
foo.cpp:20:6: note: 'void elimate(int, int)' previously defined here
 void elimate(int x, int y)
      ^
foo.cpp: In function 'int main()':
foo.cpp:102:5: error: redefinition of 'int main()'
 int main()
     ^
foo.cpp:29:5: note: 'int main()' previously defined here
 int main()
     ^