matrixdel.cpp:4: error: '>>' should be '> >' within a nested template argument list matrixdel.cpp:5: error: '>>' should be '> >' within a nested template argument list matrixdel.cpp: In function 'int main()': matrixdel.cpp:36: warning: comparison between signed and unsigned integer expressions matrixdel.cpp:49: warning: comparison between signed and unsigned integer expressions matrixdel.cpp:51: warning: comparison between signed and unsigned integer expressions