Simple C Programming

No.	Description
1	Quadratic equation
2	Sum of digits and reverse of a number
3	Nth Fibonacci number
4	Positives, negatives, and zeros in a set of n numbers
5	Evaluate series: 1 + x + x²⁄_2! + x³⁄_3! + ... + xⁿ⁄_n!
6	Pyramid display using *
7	Armstrong numbers in a range
8	Scientific calculator with 8 functions
9	Pattern display with a number (e.g., N=39174: 3 9 1 7 4)
10	Leap years in a range
11	Convert decimal to new base
12	Standard deviation of n numbers
13	Location of a number in an array
14	Append arrays A and B
15	Currency denomination
16	Matrix transpose
17	Upper triangle with 1, lower with -1, diagonal with zero in a 2D array
18	Matrix multiplication
19	Factorial of a number using recursion
20	Prime numbers
21	Short form of a string
22	Number of vowels in a string
23	Mark list of N students using array of structures
24	String length using pointer
25	Odd and even numbers to files

Writing Basic C Program

To start programming in C , you need to understand the structure of a basic C program.
Here’s a simple example:

main.c

#include <stdio.h>
#include <conio.h>
 
void main() {
    int number = 20 ;
    clrscr();
 
    printf("the number = %d",number);
    getch();
}

Explanation

#include <stdio.h>: This line tells the compiler to include the Standard Input Output library before compiling the program. This library is necessary for functions like printf.
void main(): This is the main function where the execution of the program begins. Every C program must have a main function.
printf("Value = %g",value);: This function prints the text to the screen.
The %g is a datatype representation characters that print the representing data in the console.

Other

Format Specifier	Description	Example
`%d`	Integer	`int age = 25;`
`%f`	Double (floating-point)	`double pi = 3.14;`
`%g`	General format	`printf("%g", pi);`
`%s`	Array of characters (string)	`char name[] = "Spiderman";`
`%c`	Character	`char initial = 'S';`

Introduction Solution 1

Simple C Programming

Contents

Writing Basic C Program

Explanation

Other