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  1. #include <stdio.h>
  2.  
  3. void cat_data(int *data1,const int *data2,int len2){
  4. int i=0;
  5. while(data1[i]!=0){
  6. i++; }
  7.  
  8. int j=0;
  9. while(j<len2){
  10. data1[i]=data2[j];
  11. i++;
  12. j++; }
  13. }
  14. int main(void) {
  15. int data1[7]={1,2};
  16. int data2[5]={3,4,5,6,7};
  17. int len2=5;
  18.  
  19. cat_data(data1,data2,len2);
  20.  
  21. for(int i=0; i<7; i++)
  22. printf("data1[%d]=%d\n",i,data1[i]);
  23.  
  24. return 0;
  25. }
  26.  
Success #stdin #stdout 0s 5304KB
stdin
Standard input is empty
stdout
data1[0]=1
data1[1]=2
data1[2]=3
data1[3]=4
data1[4]=5
data1[5]=6
data1[6]=7