Caffeine (1,3,7-trimethyl-xanthine) is a naturally occurring substance in coffee beans, kola nuts, guarana seeds, yerba mate, and tea leaves, and it is also synthesized in a lab as caffeine anhydrous. It stimulates the nervous system and has been shown to modestly increase daily energy expenditure, decrease energy intake, reduce perceived-effort-level of exercise, and improve feelings of energy and alertness
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Write a GUI function that will graphically demonstrate the difference between a for loop and a while loop. The function will have two push buttons: one that says 'for,' and the other that says 'while.' There are two separate callback functions, one associated with each of the pushbuttons. The callback function associated with the 'for' button prints the integers 1 through 5 , using pause(1) to pause for 1s between each, and then prints 'Done.' The callback function associated with the 'while' button prints integers beginning with 1 and also pauses between each. This function, however, also has another pushbutton that says 'mystery' on it. This function continues printing integers until the 'mystery' button is pushed, and then it prints 'Finally!'