View Compilation Error

0_0_40052326_12471.cpp: In member function 'void MAT::gauss_eliminate()':
0_0_40052326_12471.cpp:100:40: error: 's' was not declared in this scope
  100 |                 for(int k = i+1; k < r;s ++k)
      |                                        ^
0_0_40052326_12471.cpp:100:44: error: expected ')' before 'k'
  100 |                 for(int k = i+1; k < r;s ++k)
      |                                            ^
0_0_40052326_12471.cpp:100:20: note: to match this '('
  100 |                 for(int k = i+1; k < r;s ++k)
      |                    ^
0_0_40052326_12471.cpp:100:45: error: expected ';' before ')' token
  100 |                 for(int k = i+1; k < r;s ++k)
      |                                             ^