InstanceOfJava: c programming examples for beginners

sum of n numbers in c using for loop

Posted by: Instanceofjava Posted date: January 26, 2023 / comment : 0 c programming examples for beginners

Here is example of a C program that uses a for loop to calculate the sum of 'n' numbers:

#include <stdio.h>
int main() {
int n, i, num, sum = 0;
printf("Enter the value of n: ");
scanf("%d", &n);
for (i = 1; i <= n; i++) {
printf("Enter the number: ");
scanf("%d", &num);
sum += num;
}
printf("The sum of %d numbers is %d\n", n, sum);
return 0;
}

In this program, first, the user is prompted to enter the value of 'n' (the number of numbers to be added). Then, a for loop is used to iterate 'n' times and prompt the user to enter a number in each iteration. The variable 'sum' is initialized to 0 and it's being used to keep the sum of all numbers entered by the user. In each iteration, the value of 'num' is added to 'sum' using the += operator. Finally, the program prints the sum of 'n' numbers.

In this example, the for loop starts with i=1, and it will run as long as i <= n, with i being incremented by 1 in each iteration.

It's important to note that, if you want to input the n numbers at once, you can use an array and use a for loop to iterate over the array and add the numbers to the sum variable.

This C program uses a for loop to calculate the sum of 'n' numbers by prompting the user to enter a number in each iteration of the loop, adding it to a running sum, and finally printing the total sum at the end. This is a simple and efficient way to calculate the sum of multiple numbers.

c program for addition, subtraction, multiplication and division using switch

Posted by: Instanceofjava Posted date: January 22, 2023 / comment : 0 c programming examples for beginners

C program for addition, subtraction, multiplication and division using switch

#include <stdio.h>
int main() {
int num1, num2, choice;
float result;
printf("Enter two numbers: ");
scanf("%d %d", &num1, &num2);
printf("Enter your choice: \n1 for addition\n2 for subtraction\n3 for multiplication\n4 for division\n");
scanf("%d", &choice);
switch(choice) {
case 1:
result = num1 + num2;
printf("Addition: %.2f\n", result);
break;
case 2:
result = num1 - num2;
printf("Subtraction: %.2f\n", result);
break;
case 3:
result = num1 * num2;
printf("Multiplication: %.2f\n", result);
break;
case 4:
result = (float)num1 / num2;
printf("Division: %.2f\n", result);
break;
default:
printf("Invalid choice!\n");
}
return 0;
}

the user is prompted to enter two numbers and then a choice for the operation to be performed. The choice is taken as an integer input and is used in the switch statement.
Depending on the user's choice, the program performs the corresponding operation using the two numbers as input.
It's worth noting that, in the division operation, if the second number is zero, it will cause a runtime error because division by zero is not defined.
I have used type casting to convert the int variables to float so as to get the decimal value. Also, I have used the format specifier %.2f to print the result with 2 decimal places.
the user is prompted to enter two numbers and then a choice for the operation to be performed. The choice is taken as an integer input using the scanf function and is used in the switch statement. Depending on the user's choice, the program performs the corresponding operation using the two numbers as input.

The switch statement checks for the value of the variable choice. Depending on the value, the program enters the corresponding case and performs the operation. The break statement is used at the end of each case to exit the switch statement and prevent the program from executing the next case.
In the case of the division operation, I have used type casting to convert the int variables to float so as to get the decimal value. Also, I have used the format specifier %.2f to print the result with 2 decimal places.
In the default case, if the user enters any value other than 1, 2, 3, or 4, the program displays an "Invalid choice!" message. This is to handle the scenario when the user enters an unexpected value.

c program addition subtraction, multiplication and division using function

Posted by: Instanceofjava Posted date: January 21, 2023 / comment : 0 c programming examples for beginners

c program for addition subtraction, multiplication and division using function

#include <stdio.h>
int add(int a, int b) {
return a + b;
}
int subtract(int a, int b) {
return a - b;
}
int multiply(int a, int b) {
return a * b;
}
float divide(int a, int b) {
return (float)a / b;
}
int main() {
int a = 10, b = 5;
int add_result = add(a, b);
int subtract_result = subtract(a, b);
int multiply_result = multiply(a, b);
float divide_result = divide(a, b);
printf("Addition: %d + %d = %d\n", a, b, add_result);
printf("Subtraction: %d - %d = %d\n", a, b, subtract_result);
printf("Multiplication: %d * %d = %d\n", a, b, multiply_result);
printf("Division: %d / %d = %f\n", a, b, divide_result);
return 0;
}

In this program, four functions are defined for addition, subtraction, multiplication, and division respectively. Each function takes two integer arguments a and b, performs the corresponding operation, and returns the result.
In the main function, variables a and b are initialized with the values 10 and 5 respectively.
The functions are called and the results are stored in variables add_result, subtract_result, multiply_result, and divide_result.
These functions take two integer arguments and return the result of the operation. In the main() function, two integers are taken as input, and then the functions are called with these inputs to perform the operations and display the results.
In the division operation, if the second number is zero, it will cause a runtime error because division by zero is not defined.
It's also important to consider the case where the division operation results in decimal values, In that case, you should use float or double instead of int.

Ascii values in c

Posted by: Instanceofjava Posted date: January 10, 2023 / comment : 0 c programming examples for beginners

In C, you can use the int data type to represent ASCII values. Each character in the ASCII table is assigned a unique number between 0 and 127. To get the ASCII value of a character, you can simply cast it to an int. Here's an example:

char c = 'A';

int asciiValue = (int)c;

printf("The ASCII value of '%c' is %d\n", c, asciiValue);

This will output:

The ASCII value of 'A' is 65

Alternatively you can also use the 'C' library function (int)c to get the ASCII value of a character.

char c = 'A';

int asciiValue = (int)c;

printf("The ASCII value of '%c' is %d\n", c, asciiValue);

will give you the same output.

You can also find the ASCII value of a character with a function like getchar(), that returns an int value of the char type that it reads from the keyboard, or with a function like scanf() that reads a character input.

Additionally, if you want to find the ASCII value of a string, you can use a for loop to iterate through each character of the string and then get the ASCII value of each character by casting it to an int.

C program to print table of 2 using for loop

Posted by: Instanceofjava Posted date: January 10, 2023 / comment : 0 c programming examples for beginners

#include <stdio.h>

int main() {

int i;

The first line includes the standard input/output header file, which is needed for the printf function used later in the program.

The main function is the entry point for the program. It is the first function that is executed when the program runs.

The next line declares a variable i of type int. This variable will be used as the loop counter in the for loop.

for (i = 1; i <= 10; i++) {

printf("2 * %d = %d\n", i, 2 * i);

}

This is the for loop. It starts with the for keyword, followed by parentheses that contain three statements separated by semicolons:

The initialization statement i = 1 sets the value of i to 1 before the loop starts.

The loop condition i <= 10 specifies that the loop will continue as long as the value of i is less than or equal to 10.

The iteration statement i++ increments the value of i by 1 after each iteration of the loop.

Inside the loop, the printf function is used to print a string to the console. The string contains two %d format specifiers, which are placeholders for two integer values that will be printed. The first %d is replaced by the value of i, and the second %d is replaced by the result of 2 * i. The \n at the end of the string is a newline character that causes the output to be printed on a new line.

Finally, the return 0; statement at the end of the main function indicates that the program has completed successfully.

C program to find the largest element in an array

Posted by: saidesh Posted date: January 08, 2023 / comment : 0 c programming examples for beginners

C program that finds the largest element in an array :

#include <stdio.h>
int main() {
int n, i;
long long int t1 = 0, t2 = 1, nextTerm;
printf("Enter the number of terms: ");
scanf("%d", &n);
printf("Fibonacci Series: ");
for (i = 1; i <= n; ++i) {
printf("%lld, ", t1);
nextTerm = t1 + t2;
t1 = t2;
t2 = nextTerm;
}
return 0;
}

This program first reads in n, the number of elements in the array. It then reads in n elements from the user and stores them in the array.
Finally, it iterates through the array and compares each element to the first element (which is initially set to the largest).
If it finds a larger element, it updates the value of the first element to be the larger value. At the end, the program prints out the largest element in the array.

This program first initializes an array a with 10 elements and assigns the value of the first element to the variable max.
It then loops through the array and compares each element with max.
If an element is larger than max, max is updated with the new value. After the loop finishes, max will contain the largest element in the array.

Fibonacci series program in c

Posted by: saidesh Posted date: January 08, 2023 / comment : 0 c programming examples for beginners

Here is a simple program that prints out the first n numbers in the Fibonacci series in C:

#include <stdio.h>
int main() {
int n, i;
long long int t1 = 0, t2 = 1, nextTerm;
printf("Enter the number of terms: ");
scanf("%d", &n);
printf("Fibonacci Series: ");
for (i = 1; i <= n; ++i) {
printf("%lld, ", t1);
nextTerm = t1 + t2;
t1 = t2;
t2 = nextTerm;
}
return 0;
}

This program first prompts the user to enter the number of terms in the Fibonacci series to be printed. It then uses a for loop to iterate through the terms and prints each one. The loop starts at 1, and it continues until the value of i is greater than n.
On each iteration of the loop, the next term in the series is calculated as the sum of the previous two terms, and the variables t1 and t2 are updated to store the previous two terms. The first two terms of the series are initialized to 0 and 1, respectively.
This program uses a for loop to iterate through the first 20 terms in the Fibonacci series. The variables t1 and t2 represent the previous two terms, and the variable nextTerm represents the next term in the series.
The program prints out the value of t1 and then updates the values of t1, t2, and nextTerm for the next iteration of the loop.

Here is a C program that prints the first n numbers of the Fibonacci series:

Enter the number of terms: 12

First 12 terms of Fibonacci series are:

This program prompts the user to enter a positive integer n and then generates the first n terms of the Fibonacci series using a loop. with the first two terms being 0 and 1. The series starts with 0 and 1 and looks like this: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, ...
This program prompts the user to enter the number of terms in the Fibonacci series they want to generate, then uses a loop to compute and print out each term. The first two terms of the series are hard-coded as 0 and 1, and the remaining terms are computed by adding the previous two terms together.
To understand how this program works, you can read the following explanation:
The Fibonacci series is a sequence of numbers in which each number is the sum of the two preceding ones, usually starting with 0 and 1. In this program, the first two numbers of the Fibonacci series are initialized to 0 and 1.
The for loop is used to iterate over the numbers of the series. The loop starts from 0 and ends at n-1. At each iteration, the next number in the series is calculated by adding the first and second numbers. The if statement is used to handle the case where the current iteration is 0 or 1, in which case the next number is simply the current iteration.
After the next number is calculated, the first and second numbers are updated for the next iteration. Finally, the next number is printed to the screen.
I hope this helps! Let me know if you have any questions.

Subscribe to: Posts ( Atom )