Answer Posted / bavi

#include<stdio.h>
main()
{
char ch;
void replet(char);
prinf("Enter the character:");
scanf("%c",&ch);
if(ch>=65&&ch<==90)
{
printf("The character %c entered is UPPERCASE",ch);
replet(ch);
}
else
printf("The given character %c is lowercase",ch);
}
void replet(char ch)
{
ch='Z';
printf("The replaced character is %c",ch);
}

2) Write a program that will help Air Traffic Control for an airport to view the sequence of flights ready for take-off. The airport can accommodate 10 flights waiting for take-off at any point in time. Each flight has a unique 3 digit numeric identifier.  Each time a flight takes-off, Air Traffic Control adds a flight to the waitlist. Each time a flight is added to the waitlist, the list of flights waiting to take-off must be displayed.  When a flight is cleared for take-off, Air Traffic Control removes the flight from the waitlist. Each time a flight takes-off, the list of flights waiting to take-off must be displayed.  Sequence of take-off is the sequence of addition to the waitlist

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