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  1. #include<stdio.h>  
  2. #include<stdlib.h>  
  3. int main(void){  
  4.    int num,i,j=0,x;  
  5.    char s[999]; 
  6.    char str[999];
  7.  while(scanf("%d",&num)!=EOF){  
  8.        while (num!=0){ 
  9.            i=num%16;  
  10.           switch(i){  
  11.              case 10:  
  12.                    s[j]='A'; 
  13.                    break;  
  14.              case 11:  
  15.                     s[j]='B';  
  16.                    break;  
  17.              case 12:  
  18.                    s[j]='C';  
  19.                    break;  
  20.              case 13:  
  21.                     s[j]='D'; 
  22.                    break;  
  23.              case 14:  
  24.                     s[j]='E'; 
  25.                    break;    
  26.                case 15:  
  27.                     s[j]='F'; 
  28.                    break;  
  29.              default:  
  30.                   	s[j]=i;
  31.            }  
  32.           num=num/16;   
  33.           j+=1; 
  34.        } 
  35.        j-=1; 
  36.       for(i=j;i>=0;i--){ 
  37.           printf("%s",s[i]); 
  38.  
  39.        } 
  40.       j=0; 
  41.        printf("\n"); 
  42.   }  
  43.     return 0;   
  44. }
Success #stdin #stdout 0s 2248KB
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https://ideone.com/RxY2D5
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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