| CSCI 240 | Fall 2025 |
For this assignment, write a program that will generate and display three randomly sized sets of random numbers.
For each set of numbers, find and display the smallest and largest numbers.
The cpp file that is submitted for grading must be named assign4.cpp.
In the first three programs, the user has been asked for input. This program will be different. Rather than asking the user how many values are in a set of numbers or even what the values are, a random number generator will be used to determine the size of a set and the actual values in the set.
To use the random number generator, first add a #include statement for the cstdlib library to the top of the program:
#include <cstdlib>
Next, initialize the random number generator. This is done by calling the srand function and passing in an integer value (known as a seed value). This should only be done ONE time and it MUST be done before actually getting a random number. A value of 1 (or any integer literal) will generate the same sequence of "random" numbers every time the program is executed. This can be useful for debugging:
srand(1);
An integer variable can also be placed between the parenthesis and the value that the variable holds will be the seed.
srand(seed_value);
To get a different series of random numbers each time the program is run, the time that the program is run can be passed as the seed value for the random number generator. This is done as follows:
srand(time(0));
If the time function is used, make sure to include the ctime library as well.
Note: the three srand instructions that are listed above are simple examples of how to use the instruction. In a program, ONLY ONE version will be used.
Now that the random number generator has been initialized, a random number can be generated by calling the rand function:
num = rand();
The above line of C++ code will generate a "random" integer between 0 and RAND_MAX and saves the value in an integer variable named num. RAND_MAX is a pre-defined constant that is equal to the maximum possible random number. It is implementation dependent but is guaranteed to be at least 32,767.
Modulus division can be used to restrict the "random" integer to a smaller range:
To generate a value between 0 and 8: num = rand() % 9;
To change the range to 1 through 9, simply add 1: num = rand() % 9 + 1;
To get random values that are within a specified range that starts with a value other than 0 or 1:
num = minimum_value + (rand() % (maximum_value - minimum_value + 1));
So, to get values within the range 4 - 19: num = 4 + (rand() % (19 - 4 + 1));
Ask the user to enter the seed value for the random number generator and use it with the srand() instruction.
Generate a random number between 1 and 50. This will be the number of values in the first set. Display the number of values in the set with an appropriate label.
In a for loop that executes exactly "number of values in the first set" number of times:
When displaying the random numbers, make sure that there are exactly 6 values displayed per line. The exception is the last line, which may have less than 6 values displayed.
Next, generate a random number between 1 and 30. This will be the number of values in the second set. Display the number of values in the set with an appropriate label.
In a while loop that executes exactly "number of values in the second set" number of times:
As with the first set of numbers, there should be exactly 6 values displayed per line. The exception is the last line, which may have less than 6 values displayed.
Finally, generate a random number between 5 and 100. This will be the number of values in the third set. Display the number of values in the set with an appropriate label.
In a do while loop that executes exactly "number of values in the third set" number of times:
As with the other sets of numbers, there should be exactly 6 values displayed per line. The exception is the last line, which may have less than 6 values displayed.
Finally, display a table with the smallest and largest values for each set. It should resemble the following:
Set 1 Set 2 Set 3 ----------------------------------------------------- Smallest value 20004997 20951825 365145415 Largest value 2138131970 2106493143 1911556661
The "Set" labels are displayed in fields that are 27, 13, and 13 characters. There are exactly 53 dashes. With the exception of the largest value in Set 1, all the values are displayed in fields of 13 characters. The largest value in Set 1 is displayed in a field of 14 characters.
Note: when writing this program, it is important that the steps that involve the random number generator are executed in the sequence that they're listed above. This is because the random number generator simply generates a sequence of values and if those values are not processed in the same order as above, the results will not match the expected results that are listed in the Output section below.
This program MUST use at least FIVE symbolic constants.
Three of the constants represent the maximum values for the sizes of the sets of numbers. The values are 30, 50, and 100.
Another constant represents the minimum value for the size of the third set. The value is 5.
The final required constant represents the maximum number of values to display per line. The value is 6.
More symbolic constants may be added to the code if necessary.
Include line documentation. There is no need to document every single line, but logical "chunks" of code should be preceded by a line or two that describes what the "chunk" of code does. This will be the final reminder in assignment write-ups.
Add a #include for the cstdlib library at the beginning of the program
The program MUST use the 5 symbolic constants described above.
The numbers in each group MUST be displayed in columns with the LAST digit of the values lined up.
Hand in a copy of the source code (the CPP file) on the autograder and Blackboard.
Seed Value? 30
First set of numbers: 37 values
2491 107 3440 23380 31295 3435
10003 14278 10010 1416 29422 9949
5151 30942 11775 27052 21986 25150
32292 2993 4799 13348 6968 30563
5406 12777 4991 14602 21238 26938
12100 25555 3728 24521 14272 19748
29838
Second set of numbers: 5 values
9534 4653 23339 22913 30845
Third set of numbers: 5 values
1732 1794 17238 5218 6040
Set 1 Set 2 Set 3
-----------------------------------------------------
Smallest value 107 4653 1732
Largest value 32292 30845 17238
Seed Value? 7
First set of numbers: 12 values
17422 15215 7040 15521 6516 30152
11794 27727 20344 4818 28409 25042
Second set of numbers: 12 values
12042 6215 63 24189 15812 15512
2580 9185 28455 9472 22374 13198
Third set of numbers: 94 values
19266 14140 11133 23453 17475 54
2013 9945 11966 5234 10082 11741
31288 23727 27103 17153 6711 32435
7447 32719 31151 21227 11217 1985
17085 23890 17194 26699 20119 19859
25135 14876 20932 19058 1963 26530
6280 3176 29246 15564 26531 2957
9903 9235 21819 17596 12419 13499
11798 23025 20687 30294 15116 4597
3914 32139 31420 31550 24998 17941
9087 13840 23841 28174 410 10729
9815 13934 1464 10780 4954 27855
6039 19900 13316 8819 257 32443
13452 21639 1278 1107 20056 27049
30536 3237 15122 10409 26623 31137
24062 3212 14238 29989
Set 1 Set 2 Set 3
-----------------------------------------------------
Smallest value 4818 63 54
Largest value 30152 28455 32719
Seed Value? 30
First set of numbers: 11 values
2031806529 1434861956 1631022329 2111013195 1221436278 883342673
785853400 813664750 87589154 1084613083 1250890245
Second set of numbers: 13 values
79807613 1296755963 1913420385 288796870 495951870 1079045083
11311066 1126525326 1295322130 1437309271 1960856241 826795625
1734873285
Third set of numbers: 81 values
1326219047 1030750716 76703463 664914441 1859594546 1876019831
910394363 177074066 1818976167 2102723724 1486734236 1570071607
2061928160 882973481 1023294397 1459885203 1289939846 1171575257
387785056 2038051194 1162247908 389336644 198303299 2136409796
712863532 286115711 530869144 1670633570 2137210112 1278872662
1996491058 593227431 1754343443 299773191 291385275 1049601765
1226187897 1286908267 1759434532 2113843781 1550454946 929704724
456280696 45554235 1125849313 670989874 890181921 1916461245
2004407009 492629774 1079152433 1815542516 227926189 1792115922
1634151879 1022268870 1403722090 101820688 1903320204 186262916
1637155533 2112557767 1411254118 2138563758 407280867 1139148680
855151755 1574980561 814855805 778297716 526818935 170763964
991790556 255806678 80575852 1323646954 751256605 1313399522
321358741 154987782 2129471910
Set 1 Set 2 Set 3
-----------------------------------------------------
Smallest value 87589154 11311066 45554235
Largest value 2111013195 1960856241 2138563758
Seed Value? 7
First set of numbers: 50 values
1977326743 621132276 452154665 1566311569 1143995257 707192808
1615021558 1621510873 1165762081 1469983786 1365616214 1753973209
519701294 803655909 1520206580 1499041701 115722103 1468684586
1004798284 1980842827 1733897595 263789375 1101778217 1982488685
1478545590 1382451693 1240027358 1958495418 1950632757 799391797
720236547 1797810937 713504869 327648435 639176137 920132265
633235808 2012754171 1196944453 1566100122 1885172822 125891516
587317117 1203943807 1092642215 905042008 414356755 1951997711
117853558 784826772
Second set of numbers: 21 values
1426833309 1985021961 1105642382 355516783 871065927 609013490
782664828 910426321 714192172 1141731721 1318648902 500858874
1946682725 983197030 1853303192 1363931856 1362255714 1108624531
1084371145 1479605573 2017716798
Third set of numbers: 6 values
1520916114 539277757 1260271559 752881752 709957740 840593448
Set 1 Set 2 Set 3
-----------------------------------------------------
Smallest value 115722103 355516783 539277757
Largest value 2012754171 2017716798 1520916114
Seed Value? 30
First set of numbers: 34 values
1867792571 1191308030 1240413721 2134708252 1278462954 1717909034
1758326472 1352639282 1081373099 1602041298 1751411239 2138131970
1091011354 1501253366 509120985 847569113 1867770807 506396569
626734747 1291883239 1192531857 20004997 110005129 650685849
622588459 418531975 566621729 1437564493 640633144 1846148136
1931415026 360942067 889972519 1024345099
Second set of numbers: 22 values
20951825 594770485 2106493143 1373591107 1676143584 1561050794
977518698 1666791906 504578500 331288416 28429244 1352147613
51575575 534825813 1978882360 1343458815 1727357671 1998887357
1453463944 230559872 473992168 1871995919
Third set of numbers: 7 values
1911556661 365145415 495846090 1695488040 726087482 1385818609
572349491
Set 1 Set 2 Set 3
-----------------------------------------------------
Smallest value 20004997 20951825 365145415
Largest value 2138131970 2106493143 1911556661
Seed Value? 7
First set of numbers: 28 values
1863967299 1272579899 461085871 21961325 1105564443 2138782586
68574097 1291851600 118852153 1131251315 191929321 1641615331
1751255526 1909053865 351969720 462792178 1691535746 1693715570
143120736 928880504 114632963 732145788 1094870504 34412749
561287884 781032961 1630849392 77144257
Second set of numbers: 21 values
389883213 1122762934 2019460530 1662463112 1583848806 2041421855
620543907 1575147744 2109995953 1912395508 1693999897 1093763620
2104324829 1188131580 697535498 1865895047 1540101300 1160327677
1409947145 1086333222 1303448413
Third set of numbers: 70 values
1200966186 2035594201 1286214505 1235378935 449398437 2067247466
718744680 526542695 75257048 1108627893 1649305629 2094717578
623607358 1085670787 1988655786 1244151265 513334883 1951168091
1009063125 59851133 897448063 965904307 1247982713 1594983561
684315706 640600366 607827590 2094262851 1726933588 1911276003
138123204 780416126 1799386556 1424337709 2015795062 101301346
1344101527 587056094 627844041 1419358575 1695683987 129666022
1366592506 171807697 1215336810 1207764644 1415958963 1728671693
1011449087 277538440 1788522826 1908897150 1243442747 889021892
1356397063 1927758453 1529622258 1964224654 1874537656 1109072198
1728017009 2012660860 1889488325 1379919918 1289514921 1757799739
1481221264 486132800 197372185 2109065305
Set 1 Set 2 Set 3
-----------------------------------------------------
Smallest value 21961325 389883213 59851133
Largest value 2138782586 2109995953 2109065305