Question: Design a C program that implements a countdown timer. The countdown timer starts counting when you press S, stops counting when the counter reaches zero,

Design a C program that implements a countdown timer. The countdown

Design a C program that implements a countdown timer. The countdown timer starts counting when you press "S", stops counting when the counter reaches zero, and terminates the program. Each time decrement will be one second. The main function will assign the start value. (use "signals" to solve the problem)

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