ferma1.cpp: In function 'int main()': ferma1.cpp:41: warning: format '%s' expects type 'char*', but argument 2 has type 'char (*)[405]' ferma1.cpp:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result ferma1.cpp:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result ferma1.cpp:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result ferma1.cpp:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result ferma1.cpp:36: warning: 'lin' may be used uninitialized in this function ferma1.cpp:36: warning: 'col' may be used uninitialized in this function