/in/foo.c: In function 'main':
/in/foo.c:19:3: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   if(n11=isPrime(a[i])==1)
   ^~
/in/foo.c:24:3: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   if(n22=isPrime(b[j])==1)
   ^~