Compilare: user.cpp: In function ‘int main()’: user.cpp:86:35: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(ma[a][b]==ma[c][dd] && num[a][b]!=num[c][dd] && ma[a][b]!=ma[i][j]) if((d[a][b]+d[c][dd]+1)>maxi) {maxi=d[a][b]+d[c][dd]+1;solx=i;soly=j;solpoz=ma[a][b];} ^ user.cpp:44:35: 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); ^ user.cpp:45:37: 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); ^ user.cpp:46:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&p,&m,&n); ^ user.cpp:49:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",mn); ^