% ex53.m
sum=0;
cnt=0;
val=input('Enter a number (end in 0) : ');
while (val~=0)
    sum=sum+val;
    cnt=cnt+1;
    val=input('Enter a number (end in 0) : ');
end
if (cnt > 0)
    fprintf('%d numbers entered. Sum=%g. Mean=%g.\n',cnt,sum,sum/cnt);
end