[c-prog] sum about array

[洪海昆]

#include<stdio.h>
int main()
{
 int a[]={1,2,3};
 int b[]={4,5,6,7};
sum=a[1]+b[1];
 printf("%d+%d=%d\n",a[1],b[1],sum);
  return 0;
}

I want to get the result "1+4=5".How to correct the programming?
Waiting for your reply
Thank you very much!


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