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  1. # include <stdio.h>
  2.  
  3. void myStrcat(char s[], char t[]){
  4. int i,j;
  5. for(i=0;s[i]!='\0';i++)
  6. ;
  7. for(j=0;t[j]!='\0';j++){
  8. s[i+j]=t[j];
  9. }
  10. s[i+j]='\0';
  11. }
  12.  
  13. int main(){
  14. char s[100];
  15. char t[100];
  16. scanf("%s %s",s,t);
  17. printf("%s + %s",s,t);
  18. myStrcat(s,t);
  19. printf(" -> %s\n",s);
  20. return 0;
  21. }
  22.  
Success #stdin #stdout 0s 5320KB
stdin
abc def
stdout
abc + def -> abcdef