submatrix.cpp: In function `int main()': submatrix.cpp:9: warning: long int format, int arg (arg 2) submatrix.cpp:9: warning: long int format, int arg (arg 3) submatrix.cpp:8: warning: `int p1' might be used uninitialized in this function submatrix.cpp:8: warning: `int p2' might be used uninitialized in this function submatrix.cpp:8: warning: `int p3' might be used uninitialized in this function submatrix.cpp:8: warning: `int p4' might be used uninitialized in this function submatrix.cpp:40:1: warning: no newline at end of file