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  1. #include<stdio.h>
  2. int main(void)
  3. {
  4. char a[100],b[100];
  5. scanf("%s %s",a,b);
  6. printf("%s %s",b,a);
  7. return 0;
  8. }
Success #stdin #stdout 0s 9424KB
stdin
hello world
stdout
world hello