#include <stdio.h>                                                              
             unsigned            int is_unsigned(unsigned int a) {                                              
                                return a;                                                                
                                }                                                          
                                                                   
                                int main() {                                                                    
                                    unsigned int a = 2;                                             
                                    int b = -5;                                                             
                                    printf("%d\n", is_unsigned(a + b));                                         
                                    return 0;                                                                   
                                }