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  1. #include <stdio.h>
  2.  
  3. void cat_data(int *data1,const int *data2,int len2);
  4.  
  5. int main(void) {
  6.  
  7. int data1[7] = {1,2};
  8. int data2[5] = {3,4,5,6,7};
  9. int size1 = sizeof(data1)/sizeof(data1[0]);
  10. int size = sizeof(data2)/sizeof(data2[0]);
  11.  
  12. cat_data(data1,data2,size);
  13.  
  14. for(int i=0;i<size1;i++){
  15.  
  16. printf("data1[%d]=%d\n",i,data1[i]);
  17.  
  18. }
  19.  
  20. return 0;
  21. }
  22.  
  23. void cat_data(int *data1,const int *data2,int len2){
  24.  
  25. for(int i=2;i<len2+2;i++){
  26.  
  27. data1[i] = data2[i-2];
  28.  
  29. }
  30. }
Success #stdin #stdout 0s 5320KB
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