Question

A)Correct this code and explain what was corrected

// C code - For Loop / Array Population

// This program will populate integers into an array, and then display those integers.

// Developer: Johnson, William CMIS102 // Date: Mar 4, 2020

// Global constants

#define INTLIMIT 10

#include <stdio.h>

// This function will handle printing my name, class/section number, and the date

void printStudentData()

{

char fullName[19] = "William J. Johnson";

char classNumber[9] = "CMIS 102";

char sectionNumber[5] = "4020";

char currentDate[22] = "March 4th, 2020";

printf("Name: \t %s \n", fullName);

printf("Class: \t %s \n", classNumber);

printf("Section: %s \n", sectionNumber);

printf("Date: \t %s \n\n", currentDate); }

// Declare 'global' variables; available to all functions except printStudentData() int intArray[INTLIMIT], i;

// This function will populate the array with integers void populateArray()

{

for (i=0;i<INTLIMIT;;I--)

 intArray[i] = i*i;
}

// This function will display the integers in the array
void displayArray()
{
  for (i=0;i<INTLIMIT;i--)
  {
    printf("Number %d: \t", i+1);
    printf("%d\n", intArray[10-i]);
  }
}
// Start of program
int main(void) {
  printStudentData();
  displayArray();
  populateArray();
printf("\n\nThis program executed succesfully!\n\n");
return 0;
}//End main
  printf("\n\nThis program executed successfully!\n\n");
  return 0;
} // End main

Answer 1

Corrections made in the given code to make in run successfully:

1. In the for loop inside populateArray() function remove extra semicolon after i<INTLIMIT and change control variable to lower case 'i'. Also increment the control variable (i++)
2. In the for loop inside displayArray() function, increment the control variable (i++)
3. Inside the for loop inside displayArray() function, display each element in the array using index directly, no need to subtract index from 10 (printf("%d\n", intArray[i]);)
4. Inside the main() function invoke populateArray() function first and then displayArray() function. Because you need to populate the array with values before displaying it
5. Inside the main() function remove the following redundant lines

printf("\n\nThis program executed successfully!\n\n");
  return 0;
} // End main

Given below is the program after making correction:

#define INTLIMIT 10

#include <stdio.h>

// This function will handle printing my name, class/section number, and the date

void printStudentData()

{

char fullName[19] = "William J. Johnson";

char classNumber[9] = "CMIS 102";

char sectionNumber[5] = "4020";

char currentDate[22] = "March 4th, 2020";

printf("Name: \t %s \n", fullName);

printf("Class: \t %s \n", classNumber);

printf("Section: %s \n", sectionNumber);

printf("Date: \t %s \n\n", currentDate);
  
}

// Declare 'global' variables; available to all functions except printStudentData()
int intArray[INTLIMIT], i;

// This function will populate the array with integers

void populateArray()
{
for (i=0;i<INTLIMIT;i++) {
intArray[i] = i*i;
}
}

// This function will display the integers in the array
void displayArray()
{
for (i=0;i<INTLIMIT;i++)
{
printf("Number %d: \t", i+1);
printf("%d\n", intArray[i]);
}
}
// Start of program
int main(void) {
printStudentData();
populateArray();
displayArray();
  
printf("\n\nThis program executed succesfully!\n\n");
return 0;
} // End main

Screenshot of code and output from an IDE

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