zone.cpp: In function 'int fill(int, int)': zone.cpp:34: warning: no return statement in function returning non-void zone.cpp: In function 'void numarasol2(int)': zone.cpp:56: warning: comparison between signed and unsigned integer expressions zone.cpp: In function 'int main()': zone.cpp:96: warning: comparison between signed and unsigned integer expressions zone.cpp:64: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result zone.cpp:66: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result