Compilare: user.cpp: In function ‘void citeste(int&, int&, char (*)[5001])’: user.cpp:15:33: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] a[i][strlen(a[i])-1]=NULL; ^ user.cpp: In function ‘int main()’: user.cpp:31:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(max==strlen(a[i])) ^ user.cpp:35:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(max<strlen(a[i])) ^ user.cpp:55:38: warning: NULL used in arithmetic [-Wpointer-arith] for(p=a[j],q=a[i]; *p!=NULL && cod==1 && i!=j ;p++) ^ user.cpp:59:26: warning: NULL used in arithmetic [-Wpointer-arith] if(*q==NULL) ^ user.cpp: In function ‘void citeste(int&, int&, char (*)[5001])’: user.cpp:11:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%c",&p,&n,&c); ^ user.cpp:14:31: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(a[i],5001,f); ^