I suppose the number of bugs collected would stay at a constant 0, since the subject is a coin collector collecting coins.
int runningTotal = 0;
for (int i = 1; i <= 7; i++) {
output("How many did you collect on day %d?", i);
runningTotal += input();
}
output("The total for this week is %d", runningTotal);
There is no such thing as a "For-loop flowchart" although you could use a flowchart to describe a for loop.
As illustrated above, a flowchart is simply not required for a program this simple.