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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. int data1[7]={1,2};
  7. int data2[5]={3,4,5,6,7};
  8. int size=sizeof(data1)/sizeof(data1[0]);
  9. cat_data(data1, data2, size);
  10. return 0;
  11. }
  12.  
  13. void cat_data(int*data1, const int*data2, int len2){
  14. for(int i=0;i<len2;i++){
  15. data1[i+2]=data2[i];
  16. printf("data1[%d]=%d\n",i,data1[i]);
  17. }
  18. }
Success #stdin #stdout 0s 5316KB
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