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Engineering Computer Science C How to Program (8th Edition)

Program plan: intvalue variables is used for input. void displayBits ( unsigned value ) function represents the passing integer value it equivalent bits form based on bytes allocates in a specific system Program description: The main purpose of the program is to display the bits form of an integer value based on the bytes allocated by the system. Program: #include <stdio.h> #include <conio.h> //function to print the grades of students voidprintdata(intexamdata[][4],int student,int subject); //function to find minimum grade voidmingrade(intexamdata[][4],int student,int subject); //function to find maximum grade voidmaxgrade(intexamdata[][4],int student,int subject); //function to calculate average grade voidgradeavg(intexamdata[][4],int student,int subject); void main() { //array to store the exam data intexamdata[3][4]; int m, n,ch; //array of pointer to function initialization void(*processGrades[4])(int[][4],int,int)= { printdata,mingrade,maxgrade,gradeavg }; clrscr(); //input the exam data of each student printf("Enter exam data for the students \n"); for(m =0; m <3; m++) { printf("\nEnter marks for student %d ", m +1); for(n =0; n <4; n++) { printf("\nsubject %d ", n +1); scanf("%d",&examdata[m][n]); } } //print the menu while(1) { clrscr(); printf("\n\n"); printf("Enter a choice: \n"); printf("\n0 Print array of grade"); printf("\n1 Find the minimum grade"); printf("\n2 Find the maximum grade"); printf("\n3 Print the average on all testes for each student"); printf("\n4 End program"); printf("\n?"); scanf("%d",&ch); //check if choiec is invalid if(ch>=0&&ch<=4) { //check to end of program if(ch==4) break; else //otherwise call the function // as choice entered by user (*processGrades[ch])(examdata,3,4); } else printf("\n Invalid Choice"); getch(); } } //function definition to print the student exam data voidprintdata(intexamdata[][4],int student,int subject) { int m,n; //print the headers printf("\n\t sub1 sub2 sub3 sub4\n"); //loop to get the data for(m =0; m < student; m++) { //print student number printf("Student %d\t", m +1); for(n =0; n < subject; n++) //print grade of student printf("%d ",examdata[m][n]); printf("\n"); } } //function definition to find minimum grade from the data voidmingrade(intexamdata[][4],int student,int subject) { int low, m,n; //set the highest grade low =100; for(m =0; m < student; m++) for(n =0; n < subject; n++) //check if low value is greater than current grade if(low >examdata[m][n]) //copy the low value low =examdata[m][n]; //print the lowest value printf("\n Minimum Grade is %d ", low); } //function definition to find maximum grade voidmaxgrade(intexamdata[][4],int student,int subject) { int high, m,n; //set the lowest value high =0; for(m =0; m < student; m++) for(n =0; n < subject; n++) //check if current high value is lower than current grade if(high <examdata[m][n]) //copy the higher grade high =examdata[m][n]; //print the highest grade printf("\n Maximum Grade is %d ", high); } //function definition to calculate average grade of each student voidgradeavg(intexamdata[][4],int student,int subject) { inttgrade, m,n; floatavg; for(m =0; m < student; m++) { //set the total grade to 0 tgrade=0; for(n =0; n < subject; n++) //add the grades of current student tgrade+=examdata[m][n]; //calculate the average avg =tgrade/(float)subject; //print the average of current student printf("\nStudent %d average grade is %.2f ", m +1, avg); } } Explanation: In the above code an integer value is input by the user. Then displayBits() function display the bits value of the input integer value. It first checks whether specific system allocates 4 bytes or 2 bytes to store the integer value. It then initializes the bitmask accordingly. A loop executes from 1 to total no of bits for that integer value. In each iteration integer bits are compared with the bitmask using bitwise AND operation to check whether current bit is 1 or 0 and print accordingly. To separate the bits in 8 bits group, after every 8 bit a space is inserted. Sample output:

Program plan: intvalue variables is used for input. void displayBits ( unsigned value ) function represents the passing integer value it equivalent bits form based on bytes allocates in a specific system Program description: The main purpose of the program is to display the bits form of an integer value based on the bytes allocated by the system. Program: #include <stdio.h> #include <conio.h> //function to print the grades of students voidprintdata(intexamdata[][4],int student,int subject); //function to find minimum grade voidmingrade(intexamdata[][4],int student,int subject); //function to find maximum grade voidmaxgrade(intexamdata[][4],int student,int subject); //function to calculate average grade voidgradeavg(intexamdata[][4],int student,int subject); void main() { //array to store the exam data intexamdata[3][4]; int m, n,ch; //array of pointer to function initialization void(processGrades[4])(int[][4],int,int)= { printdata,mingrade,maxgrade,gradeavg }; clrscr(); //input the exam data of each student printf("Enter exam data for the students \n"); for(m =0; m <3; m++) { printf("\nEnter marks for student %d ", m +1); for(n =0; n <4; n++) { printf("\nsubject %d ", n +1); scanf("%d",&examdata[m][n]); } } //print the menu while(1) { clrscr(); printf("\n\n"); printf("Enter a choice: \n"); printf("\n0 Print array of grade"); printf("\n1 Find the minimum grade"); printf("\n2 Find the maximum grade"); printf("\n3 Print the average on all testes for each student"); printf("\n4 End program"); printf("\n?"); scanf("%d",&ch); //check if choiec is invalid if(ch>=0&&ch<=4) { //check to end of program if(ch==4) break; else //otherwise call the function // as choice entered by user (processGrades[ch])(examdata,3,4); } else printf("\n Invalid Choice"); getch(); } } //function definition to print the student exam data voidprintdata(intexamdata[][4],int student,int subject) { int m,n; //print the headers printf("\n\t sub1 sub2 sub3 sub4\n"); //loop to get the data for(m =0; m < student; m++) { //print student number printf("Student %d\t", m +1); for(n =0; n < subject; n++) //print grade of student printf("%d ",examdata[m][n]); printf("\n"); } } //function definition to find minimum grade from the data voidmingrade(intexamdata[][4],int student,int subject) { int low, m,n; //set the highest grade low =100; for(m =0; m < student; m++) for(n =0; n < subject; n++) //check if low value is greater than current grade if(low >examdata[m][n]) //copy the low value low =examdata[m][n]; //print the lowest value printf("\n Minimum Grade is %d ", low); } //function definition to find maximum grade voidmaxgrade(intexamdata[][4],int student,int subject) { int high, m,n; //set the lowest value high =0; for(m =0; m < student; m++) for(n =0; n < subject; n++) //check if current high value is lower than current grade if(high <examdata[m][n]) //copy the higher grade high =examdata[m][n]; //print the highest grade printf("\n Maximum Grade is %d ", high); } //function definition to calculate average grade of each student voidgradeavg(intexamdata[][4],int student,int subject) { inttgrade, m,n; floatavg; for(m =0; m < student; m++) { //set the total grade to 0 tgrade=0; for(n =0; n < subject; n++) //add the grades of current student tgrade+=examdata[m][n]; //calculate the average avg =tgrade/(float)subject; //print the average of current student printf("\nStudent %d average grade is %.2f ", m +1, avg); } } Explanation: In the above code an integer value is input by the user. Then displayBits() function display the bits value of the input integer value. It first checks whether specific system allocates 4 bytes or 2 bytes to store the integer value. It then initializes the bitmask accordingly. A loop executes from 1 to total no of bits for that integer value. In each iteration integer bits are compared with the bitmask using bitwise AND operation to check whether current bit is 1 or 0 and print accordingly. To separate the bits in 8 bits group, after every 8 bit a space is inserted. Sample output:

Solution Summary: The author describes the purpose of the program, which is to display the bits form of an integer value based on the bytes allocated by the system.

C How to Program (8th Edition)

C How to Program (8th Edition)

8th Edition

ISBN: 9780133976892

Author: Paul J. Deitel, Harvey Deitel

Publisher: PEARSON

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Chapter 7, Problem 7.24E

Chapter 7, Problem 7.26E

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Chapter 7 Solutions

C How to Program (8th Edition)

Ch. 7 - Answer each of the following: The _____ operator...Ch. 7 - Prob. 7.10E Ch. 7 - Do each of the following: Write the function...Ch. 7 - (Simulation: The Tortoise and the Hare) In this...Ch. 7 - (Card Shuffling and Dealing Modification) Modify...Ch. 7 - What does this program do, assuming that the user...Ch. 7 - What does this program do?Ch. 7 - Find the error in each of the following program...Ch. 7 - (Maze Traversal) The following grid is a...Ch. 7 - Prob. 7.23E

Ch. 7 - Prob. 7.24E Ch. 7 - Prob. 7.25E Ch. 7 - What does this program do, assuming that the user...Ch. 7 - (Calculating Circle Circumference, Circle Area or...Ch. 7 - (Calculator Using Function Pointers) Using the...Ch. 7 - (Polling) The Internet and the web are enabling...Ch. 7 - Prob. 7.33MD

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