FreeNotes
∅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
Output of the program: #include <stdio.h> void main(void) { int b; float a, c, d, e, f; a = 14.84; b = 7; c = a – b; printf(“\nc=%f”, c); // c = 14.84 – 7 = 7.840000 d = a / b; printf(“\nd=%f”, d); // d = 14.84 / 7 = 2.120000 e = … Read more
Output of the program: #include <stdio.h> void main(void) { int x, y, z1, z2, z3, z4; x = 17; y = 5; z1 = x / y; printf(“\nz1=%d”, z1); // z1 = 17 / 5 = 3 z2 = x % y; printf(“\nz2=%d”, z2); // z2 = 17 % 5 = 2 z3 = ++x; … Read more
7 + 5(3 + 4) → 7 + 5 * (3 + 4) → 7 + 5 * 7 → 7 + 35 = 42 100 / 10 / 4 → 10 / 4 → 2 (integer division) 50 % 13 % 3 → 50 % 13 = 11, then 11 % 3 = 2 … Read more
printf() is used to display output to the screen, whereas scanf() is used to take input from the user. printf() formats and outputs data, while scanf() reads and stores data from the user into variables.Example: int num; scanf(“%d”, &num); // User input is stored in ‘num’ printf(“You entered: %d”, num); // Output the value of … Read more
The printf() function is used to print formatted output to the console. It allows us to display data in a specified format. For example, to print an integer and a floating-point number: int a = 5; float b = 3.14; printf(“a = %d, b = %f”, a, b); This will print “a = 5, b … Read more