Problem Statement : If a five-digit number is input through the keyboard, write a program to reverse the number. Answer: /* To reverse the digits of 5-digit number */ #include<stdio.h> #include<conio.h> main() { int n,a,b; long int revnum=0; clrscr(); printf(“\n Enter a five digit number less than 32767”); scanf(“%d”,&n); a=n%10; /*last digit */ n-n/10; /* … Read more
Problem Statement : Two numbers are input through the keyboard into two locations C and D. Write a program to interchange the contents of C and D. Answer: /* Interchanging of contents of two variables c & d */ #include<stdio.h> #include<conio.h> main() { int c,d,e; clrscr(); printf(“\n Enter the number at location C:”); scanf(“%d”, &c); … Read more
Problem Statement: The length & breadth of a rectangle and radius of a circle are input through the keyboard. Write a program to calculate the area & perimeter of the rectangle, and the area & circumference of the circle. Answer: /* Calculation of perimeter and area of rectangle and circle */ #include<stdio.h> #include<conio.h> main() { … Read more
Problem Statement: If the marks obtained by a student in five different subjects are input through the keyboard, find out the aggregate marks and percentage marks obtained by the student. Assume that the maximum marks that can be obtained by a student in each subject is 100. Answer: /* Calculation of aggregate and percentage marks … Read more
In order to effectively develop C programs, it will be necessary to understand the rules that are used for the implicit conversion of floating point and integer values in C. These are mentioned below. Note them carefully. An arithmetic operation between an integer and integer always yields an integer result. An operation between a real … Read more
In the First C Program discussed earlier (same has been also mentioned below for the reference) we assumed the values of p, n and r to be 1000, 3 and 8.5. Every time we run the program we would get the same value for simple interest. If we want to calculate simple interest for some other … Read more
Once you have written the program you need to type it and instruct the machine to execute it. To type your C program you need another program called Editor. Once the program has been typed it needs to be converted to machine language (0’s and 1’s) before the machine can execute it. To carry out … Read more
we would write our first C program now. Once we have done that we would see in detail the instructions that it made use of. Before we begin with our first C program do remember the following rules that are applicable to all C programs: Each instruction in a C program is written as a … Read more
An entity that may vary during program execution is called a variable. Variable names are names given to locations in memory. These locations can contain integer, real or character constants. In any language, the types of variables that it can support depend on the types of constants that it can handle. This is because a particular type … Read more
C constants can be divided into two major categories: Primary Constants: Secondary Constants: At this stage we would restrict our discussion to only Primary Constants, namely, Integer, Real and Character constants. Let us see the details of each of these constants. For constructing these different types of constants certain rules have been laid down. These … Read more