Compilare: user.cpp: In function ‘void rezolv(char*)’: user.cpp:27:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(i<l) ^ user.cpp: In function ‘int main()’: user.cpp:45:11: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] *p=NULL; ^ user.cpp:38:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:42:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",s); ^