C Programming Code Examples
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C program to generate nth fibonacci term using recursion
/* C program to generate nth fibonacci term using recursion
Write a recursive function to generate nth fibonacci term in C programming. How to generate nth fibonacci term in C programming using recursion.
Declare recursive function to find nth Fibonacci term
Assign a meaningful name to the function, say fibo().
The function accepts an integer hence update function declaration to fibo(int x).
Finally the function must return the nth Fibonacci term which is an integer. Hence, return type of the function should be unsigned long long.
Function declaration to find nth Fibonacci term is - unsigned long long fibo(int x); */
#include <stdio.h>
/* Function declaration */
unsigned long long fibo(int x);
int main()
{
int x;
unsigned long long fibonacci;
/* Input a number from user */
printf("Enter any number to find nth fiboacci term: ");
scanf("%d", &x);
fibonacci = fibo(x);
printf("%d fibonacci term is %llu", x, fibonacci);
return 0;
}
/* Recursive function to find nth Fibonacci term */
unsigned long long fibo(int x)
{
if(x == 0) //Base condition
return 0;
else if(x == 1) //Base condition
return 1;
else
return fibo(x-1) + fibo(x-2);
}
Writes the C string pointed by format to the standard output (stdout). If format includes format specifiers (subsequences beginning with %), the additional arguments following format are formatted and inserted in the resulting string replacing their respective specifiers. printf format string refers to a control parameter used by a class of functions in the input/output libraries of C programming language. The string is written in a simple template language: characters are usually copied literally into the function's output, but format specifiers, which start with a % character, indicate the location and method to translate a piece of data (such as a number) to characters. "printf" is the name of one of the main C output functions, and stands for "print formatted". printf format strings are complementary to scanf format strings, which provide formatted input (parsing). In both cases these provide simple functionality and fixed format compared to more sophisticated and flexible template engines or parsers,
In C, the "main" function is treated the same as every function, it has a return type (and in some cases accepts inputs via parameters). The only difference is that the main function is "called" by the operating system when the user runs the program. Thus the main function is always the first code executed when a program starts. main() function is a user defined, body of the function is defined by the programmer or we can say main() is programmer/user implemented function, whose prototype is predefined in the compiler. Hence we can say that main() in c programming is user defined as well as predefined because it's prototype is predefined. main() is a system (compiler) declared function whose defined by the user, which is invoked automatically by the operating system when program is being executed.
#include is a way of including a standard or user-defined file in the program and is mostly written at the beginning of any C/C++ program. This directive is read by the preprocessor and orders it to insert the content of a user-defined or system header file into the following program. These files are mainly imported from an outside source into the current program. The process of importing such files that might be system-defined or user-defined is known as File Inclusion. This type of preprocessor directive tells the compiler to include a file in the source code program. Here are the two types of file that can be included using #include:
The if...else statement executes two different codes depending upon whether the test expression is true or false. Sometimes, a choice has to be made from more than 2 possibilities. The if...else ladder allows you to check between multiple test expressions and execute different statements. In C/C++ if-else-if ladder helps user decide from among multiple options. The C/C++ if statements are executed from the top down. As soon as one of the conditions controlling the if is true, the statement associated with that if is executed, and the rest of the C else-if ladder is bypassed. If none of the conditions is true, then the final else statement will be executed.
A function is a group of statements that together perform a task. Every C program has at least one function, which is main(), and all the most trivial programs can define additional functions. You can divide up your code into separate functions. How you divide up your code among different functions is up to you, but logically the division is such that each function performs a specific task. A function declaration tells the compiler about a function's name, return type, and parameters. A function definition provides the actual body of the function. The C standard library provides numerous built-in functions that your program can call. For example, strcat() to concatenate two strings, memcpy() to copy one memory location to another location, and many more functions. A function can also be referred as a method or a sub-routine or a procedure, etc.
Read formatted data from stdin. Reads data from stdin and stores them according to the parameter format into the locations pointed by the additional arguments. The additional arguments should point to already allocated objects of the type specified by their corresponding format specifier within the format string. In C programming, scanf() is one of the commonly used function to take input from the user. The scanf() function reads formatted input from the standard input such as keyboards. The scanf() function enables the programmer to accept formatted inputs to the application or production code. Moreover, by using this function, the users can provide dynamic input values to the application.
Finding the second largest value in an array is a classic C array program. Program gives you an insight of iteration, array and conditional operators. We iteratively check each element
Sub functions to check the progress of the game, function to create paddle, functions to create bricks, clear a layer, produce various sounds, create a single brick, display symbol
