Compilare: main.cpp: In function 'int main()': main.cpp:29:23: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[403]' [-Wformat=] scanf("%s",&aa); ^ main.cpp:60:37: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(pi1<=n && pi2<=n & pj1<=m && pj2<=m && pi1>0 && pi2>0 && pj1>0 && pj2>0 && b[pi1][pj1]!=b[pi2][pj2] && a[i][j]!=a[pi1][pj1] && a[i][j]!=a[pi2][pj2]) ~~~^~~ main.cpp:24:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ferma3.in","r",stdin); ^ main.cpp:25:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ferma3.out","w",stdout); ^ main.cpp:26:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&c,&n,&m); ^ main.cpp:29:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&aa); ^