This program is printing "Hello Programming School". It introduces the basic structure of a C program. It includes the '#include <stdio.h>' line, which is a preprocessor directive to include the standard input/output library. The 'main' function is the entry point of the program, and 'printf' is used to print the "Hello Programming School!" message to the console.
Variables and Input:
#include <stdio.h>
int main() {
int age;
printf("Enter your age: "); scanf("%d", &age);
printf("You entered: %d", age);
return 0; }
This program demonstrate the use of variables and input/output. It declares an integer variable ' age ' , prompts the user to enter their age, reads the input using ' scanf ' , and then prints the entered age using ' printf ' .
Arithmetic Operations:
#include <stdio.h>
int main() {
int a = 2, b = 4;
printf("Sum : %d\n", a + b);
printf("Difference : %d\n", a - b);
printf("Product : %d\n", a * b);
printf("Quotient : %d\n", a / b);
return 0; }
The program showcases basic arithmetic operations. It declares two integers ('a' and 'b'), performs addition, subtraction, multiplication, and division, and prints the results using 'printf'.
Conditional Statements:
#include <stdio.h>
int main() {
int number;
printf("Enter a number : "); scanf("%d", &number);
if (number > 0) {
printf("The number is positive.");
} else if (number < 0) {
printf("The number is negative.");
} else {
printf("The number is zero.");
}
return 0;
}
This program illustrates the use of conditional statements (' if ' , ' else if ' , ' else '). It prompts the user to enter a number, reads the input, and checks whether the number is positive, negative, or zero. The results are printed accordingly.
For Loop:
#include <stdio.h>
int main() {
for (int i = 1; i <= 5; i++) {
printf("%d", i);
}
printf("\n");
return 0;
}
This example demonstrates a 'for' loop. It prints the numbers 1 through 5 using a loop structure, showcasing the basic syntax of a 'for' loop.
While Loop:
#include <stdio.h>
int main() {
int i = 1;
while (i <= 5) {
printf("%d", i);
i++;
}
printf("\n");
return 0;
}
The program uses a ' while ' loop to achive the same result as the previous examples, printing numbers 1 through 5. It shows an alternative loop structure.
Function:
#include <stdio.h>
int add(int a, int b) {
return a + b;
}
int main() {
int result = add(3, 4);
printf("Sum : %d\n", result);
return 0;
}
This program introduce functions in C. It declares a function 'add' that takes two integer parameters and returns their sum. In the 'main' function, it calls the 'add' function with arguments 3 and 4, stores the result in a variable, and then prints the sum.
