submat.cpp: In function 'int main()': submat.cpp:13: warning: format '%d' expects type 'int*', but argument 3 has type 'short int*' submat.cpp:13: warning: format '%d' expects type 'int*', but argument 4 has type 'short int*' submat.cpp:13: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result submat.cpp:19: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result