Category: Programming Examples in C

Program in C to find weekday based on weekday number 1

Program in C to find weekday based on weekday number

The below program in C will find out weekday based on the weekday number input. We will be following the below logic. 1 -> Sunday 2 -> Monday 3 -> Tuesday 4 -> Wednesday 5 -> Thursday 6 -> Friday 7 -> Saturday Here we are accepting the week day number as input from the user and use switch statement to display the weekday. Below is the program in C. #include<stdio.h> #include<conio.h> void main(){ int day; clrscr(); printf(“Enter the day number: “); scanf(“%d”, &day); switch(day){ case 1: printf(“\nIts Sunday”); break; case 2: printf(“\nIts Monday”); break; case 3: printf(“\nIts Tuesday”); break;...

Write a C program that reads in a lowercase character, converts it to uppercase and then displays the uppercase equivalent 3

Write a C program that reads in a lowercase character, converts it to uppercase and then displays the uppercase equivalent

C program that converts lowercase character to its uppercase equivalent and displays it Explanation Step 1: Read the lowercase character Step 2: Convert the lowercase character to its uppercase by using the library function toupper() Step 3: Display the converted uppercase character Note: The function toupper() used in this program is a library function which is generally included in the header file ctype.h and the purpose of this function is to convert the lowercase letter to its uppercase. #include<stdio.h> #include<ctype.h> void main() { char lower, upper; lower = getchar(); upper = toupper(lower); putchar(upper); } Output: l L

Write a program in C that reads a line of text into the computer and then writes back out in its original form 3

Write a program in C that reads a line of text into the computer and then writes back out in its original form

Below is the C program that reads a line of text into the computer and then writes back out in its original form Explanation Step 1: Read the line of text by using the library function gets() and store it in an array Step 2: Display the read line by using the library function puts() Program: #include<stdio.h> void main() { char line[80]; gets(line); puts(line); } Output: Learn C Online is the best tutorial website to learn C Learn C Online is the best tutorial website to learn C

Program in C that reads radius of a circle and calculates its area 1

Program in C that reads radius of a circle and calculates its area

The below program in C will accepts the radius of a circle from the user and calculates its area and displays the calculated result to the user on the screen. Explanation Step 1: Read the radius Step 2: Calculate the area by applying the formula: Area = (pi)*r2 = 3.14 * r2 #include<stdio.h> #include<conio.h> void main() { float radius, area; printf(“Radius = ?”); scanf(“%f”, &radius); //calculate the area area = 3.14 * radius * radius; //display the calculated result printf(“Area = %f”, area); getch(); } Output: Radius = ?5 Area = 78.500000

Program to determine the type of the character entered 5

Program to determine the type of the character entered

A character is entered through the keyboard. Below is a program to determine whether the character entered is a capital letter, a small case letter, a digit or special symbol. We will make use of isupper(), islower() and isdigit() functions to write this C Program. isupper() – This function will take character as parameter and will return true if the character is UPPERCASE. islower() – This function will take character as parameter and will return true if the character is lowercase. isdigit() – This function will take character as parameter and will return true if the character is a digit else it will return...

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