#include<stdio.h>
int main( )
{
int a[ ]={2,4,7}; //array to be tested
int n=sizeof(a)/sizeof(a[0]); //length of array
int i,j,match;
for(i=1;i<=9;i++) //here we are testing the missing elements from 1 to 9
{
match=0;
for(j=0; j<n | | (match==0);j++) //it will loop until the array ends or we found a match
if(a[j] = = i)
match=1;
if(match==0) //no match found
printf("%d ",i);
}
return 0;
}
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