fork(1) download
copy 
  1. #include<stdio.h>
  2. #include<string.h>
  3. #include<ctype.h>
  4.  
  5. int main(){
  6.     char ch[20];
  7.     printf("\nEnter Your String :");
  8.     gets(ch);
  9.  
  10.     int i=0;
  11.     for(i=0;ch[i] !='\0';i++)
  12.     {
  13.         putchar(toupper(ch[i]));
  14.         putchar(ch[i]);
  15.     }
  16.  
  17.     return 0;
  18. }
Success #stdin #stdout 0.01s 1680KB
comments (?)
stdin
copy 
aBcDeF
stdout
copy 
Enter Your String :AaBBCcDDEeFF
https://ideone.com/OB1wi
language:
C (gcc 8.3)
created:
13 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!