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1. The controller of the cinema need create an admission charge program. Write the program (using SWITCH) that prompts the usMARS

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Answer #1

1)

#switchCase.mar

def main() :: io Num:

    var age :: Num      # declaring variable age
  
    print_string("Please enter age : ")
  
    age = get_char() :: io Num # taking input from user for value of age

    switch age:
        case 0 :                    # case 0 .. 3 are for under 3
            print_string("free\n")
        case 1 :
            print_string("free\n")
        case 2 :
            print_string("free\n")
        case 3 :                    # case 3 .. 12 are for age [3 to 12]
            print_string("$5\n")
        case 4 :
            print_string("$5\n")
        case 5 :
            print_string("$5\n")
        case 6 :
            print_string("$5\n")
        case 7 :
            print_string("$5\n")
        case 8 :
            print_string("$5\n")
        case 9 :
            print_string("$5\n")
        case 10 :
            print_string("$5\n")
        case 11 :
            print_string("$5\n")
        case 12 :
            print_string("$5\n")
        case 21:                    # case 21 .. 55 are for age [21 to 55]
            print_string("$15\n")
        case 22:
            print_string("$15\n")
        case 23:
            print_string("$15\n")
        case 24:
            print_string("$15\n")
        case 25:
            print_string("$15\n")
        case 26:
            print_string("$15\n")
        case 27:
            print_string("$15\n")
        case 28:
            print_string("$15\n")
        case 29:
            print_string("$15\n")
        case 30:
            print_string("$15\n")
        case 31:
            print_string("$15\n")
        case 32:
            print_string("$15\n")
        case 33:
            print_string("$15\n")
        case 34:
            print_string("$15\n")
        case 35:
            print_string("$15\n")
        case 36:
            print_string("$15\n")
        case 37:
            print_string("$15\n")
        case 38:
            print_string("$15\n")
        case 39:
            print_string("$15\n")
        case 40:
            print_string("$15\n")
        case 41:
            print_string("$15\n")
        case 42:
            print_string("$15\n")
        case 43:
            print_string("$15\n")
        case 44:
            print_string("$15\n")
        case 45:
            print_string("$15\n")
        case 46:
            print_string("$15\n")
        case 47:
            print_string("$15\n")
        case 48:
            print_string("$15\n")
        case 49:
            print_string("$15\n")
        case 50:
            print_string("$15\n")
        case 51:
            print_string("$15\n")
        case 52:
            print_string("$15\n")
        case 53:
            print_string("$15\n")
        case 54:
            print_string("$15\n")
        case 55:
            print_string("$15\n")
        case _:                     # this is the default case for age [over 55 or (3-12)]
            print_string("$10\n")
          
    return 0


Command line output :

$ mars switchCase.mar
Please enter age : 15
$10

$ mars switchCase.mar
Please enter age : 72
$10

$ mars switchCase.mar
Please enter age : 25
$15

2)

#ifElse.mar
def main() :: io Num:

  
    var age :: Num      # declaring variable age
  
    print_string("Please enter age : ")

    age = get_char() :: io Num # taking input from user for value of age

    if age > 55:        # if age is over 55
        print_string("$10\n")
    elif age >= 21:     # if age is between [21,55]
        print_string("$15\n")
    elif age >= 13:     # if age is between [13,20]
        print_string("$10\n")
    elif age >= 3:      # if age is between [3,12]
        print_string("$5\n")
    elif age > 0 :      # if age is under 3
        print_string("free\n")

    return 0
  
  
Command line output :

$ mars ifElse.mar
Please enter age : 2
free

$ mars ifElse.mar
Please enter age : 10
$5

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