FreeNotes
The if and if-else selection structures are both used to make decisions in programming. In an if statement, a condition is evaluated, and if the condition is true, the subsequent block of code is executed. If the condition is false, no code is executed unless an alternative is explicitly provided. The if-else structure, however, provides … Read more
#include <stdio.h> int main() { float marks[5], total = 0, percentage; char grade; // Taking input for marks printf(“Enter marks for five subjects:\n”); for (int i = 0; i < 5; i++) { printf(“Subject %d: “, i + 1); scanf(“%f”, &marks[i]); total += marks[i]; // Adding marks to total } // Calculating percentage percentage = … Read more
In C, format specifiers are used with functions like printf() and scanf() to control the input and output format of variables. Below are some commonly used format specifiers: %d or %i: Used for printing or reading integers. int num = 10; printf(“%d”, num); // Output: 10 %f: Used for printing or reading floating-point numbers (e.g., … Read more
#include <stdio.h> int main() { int num; // Take input from the user printf(“Enter a number: “); scanf(“%d”, &num); // Check if the number is even or odd using modulus operator if (num % 2 == 0) { printf(“%d is even.\n”, num); } else { printf(“%d is odd.\n”, num); } return 0; } Explanation: The … Read more
∅In C, the main function is the entry point of the program. The return 0; statement at the end of the main function indicates successful program execution. In C, the main function returns an integer value, and by convention, returning 0 signifies that the program executed successfully without errors. Non-zero return values can be used … Read more
The if-else statement in C is used to execute a block of code conditionally. The syntax is as follows: if (condition) { // Code to be executed if the condition is true } else { // Code to be executed if the condition is false } Here, condition is an expression that evaluates to true … Read more
In C programming, the stdio.h header file is necessary for using input and output functions such as printf() and scanf(). If this header file is not included, the compiler will not recognize these functions and will throw an error when the program tries to use them. For example, if you write a program that uses … Read more
The modulus operator % in C is used to find the remainder of the division between two numbers. It is an arithmetic operator that returns the remainder when the first operand is divided by the second operand. For example, in the expression 17 % 5, the number 17 is divided by 5, and the remainder … Read more
In C, integers and floating-point numbers are both used to store numerical data, but they differ in the type of numbers they can represent. An integer is a data type used to store whole numbers, both positive and negative, without any fractional part (e.g., -1, 0, 100). The int data type in C is typically … Read more
#include <stdio.h> int main() { float side, volume; // Reading the length of one side of the cube printf(“Enter the length of one side of the cube: “); scanf(“%f”, &side); // Calculating volume volume = side * side * side; // Printing the volume printf(“Volume of the cube: %.2f\n”, volume); return 0; } Related Questions: … Read more