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Update 20220510 How to (safely) read user input with the getline function.md

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@ -26,10 +26,9 @@ As a simple example, we might ask the user a question and read the result into a
#include <stdio.h>
#include <string.h>
int
main()
int main()
{
  char city[10];                       // Such as "Chicago"
  char city[10]; // Such as "Chicago"
  // this is bad .. please don't use gets