nlahkimdev tasks

00-introduction-to-c.md

@@ -1,8 +1,15 @@
 # Introduction To C 
 What is C?
+	C is a compiled programming language.
 Who invented c?
+	C was invented by Denis Ritchie
 What year was c invented?
+	C was invented back in seventies
 Why are we learning to program in c?
+
 What's special about c?
+
 What is c used for?
+
 Why did we start with C?
+

06-conditional-statements.c

@@ -1,3 +1,6 @@
+#include <stdio.h>
+int main (void)
+{
 /*
 C if Statement
 The syntax of the if statement in C programming is:
@@ -17,6 +20,14 @@ Practice Program
 Check if a number is negative
 */
 
+int num;
+printf("Check if your number is positive or negative\nEnter a number : ");
+scanf("%d", &num);
+if (num > 0)
+	printf("%d is positive\n", num);
+else
+	printf("%d is negative\n", num);
+
 /*
 
 C if...else Statement
@@ -41,7 +52,13 @@ statements inside the body of if are skipped from execution.
 Practice Program
 Check whether a number is odd or even
 */
-
+int num1;
+printf("Check if a number is Even or Odd\nEnter a number : ");
+scanf("%d", &num1);
+if (num1 % 2 == 0)
+	printf("%d is Even\n", num1);
+else
+	printf("%d is Odd\n", num1);
 /*
 C if...else Ladder
 The if...else statement executes two different codes depending
@@ -70,4 +87,17 @@ else {
 Practice Program
 Program to relate two integers using ==, > or < symbol
 
-*/
+*/
+int age;
+printf("Check your age\nEnter an age : ");
+scanf("%d", &age);
+if (age < 13)
+	printf("you are too young\n");
+else if (age >= 13 && age <= 18)
+	printf("You are a teenager\n");
+else
+	printf("you are an adult\n");
+
+
+return (0);
+}

07-loops.c

@@ -1,3 +1,7 @@
+#include <stdio.h>
+
+int main(void)
+{
 /*
 In programming, a loop is used to repeat a
 block of code until the specified condition is met.
@@ -32,7 +36,10 @@ Practice Program
 Print Numbers 1 - 10
 Calculate the sum
 */
-
+printf("let's print numbers from 1 to 10 using for loop\n");
+for (int i = 1; i <= 10; i++)
+	printf("%d ",i);
+putchar('\n');
 /*
 C while loop
 The syntax of the while loop is:
@@ -50,7 +57,14 @@ If testExpression is false, the loop terminates (ends).
 Practice Program
 Print Numbers 1 - 10
 */
-
+printf("let's print numbers from 1 to 10 using while loop\n");
+int i = 1;
+while(i<=10)
+{
+	printf("%d ", i);
+	i++;
+}
+putchar('\n');
 /*
 do...while loop
 The do..while loop is similar to the while loop with one important
@@ -72,4 +86,13 @@ How do...while loop works?
 
 Practice Program
 Ask for correct input continously
-*/
+*/
+int num;
+do{
+	printf("Enter a random number, or 0 to quit : ");
+	scanf("%d", &num);
+	printf("You entered %d\n", num);
+}while(num !=0);
+
+return (0);
+}

08-Ternary-Operator.c

@@ -16,4 +16,13 @@ Syntax
 condition ? value_if_true : value_if_false
 
 Ternary operator can also be nested
-*/
+*/
+#include <stdio.h>
+int main(void)
+{
+	int num;
+	printf("Enter an number : ");
+	scanf("%d",&num);
+	(num % 2 == 0) ? printf("%d is Even\n",num) : printf("%d is Odd\n", num);
+return(0);
+}

09-Nested-Loops.c

@@ -1,3 +1,8 @@
+#include <stdio.h>
+
+int main (void)
+{
+
 /*
     Nested Loops
 A nested loop means a loop statement inside another
@@ -33,7 +38,19 @@ while(condition) {
 Practice Problem
 FizzBuzz
 */
-
+printf("FizzBuzz if divided by both 5 & 3.\nFizz is divided by 3.\nBuzz if divided by 5\n");
+for (int i = 1; i <= 100; i++)
+{
+	if ( i % 3 == 0 && i % 5 == 0)
+		printf("FizzBuzz ");
+	else if (i % 5 == 0)
+		printf("Buzz ");
+	else if (i % 3 == 0)
+		printf("Fizz ");
+	else
+		printf("%d ", i); 
+}
+putchar('\n');
 /*
 int n = 6;// variable declaration  
    //printf("Enter the value of n :");  
@@ -46,4 +63,7 @@ int n = 6;// variable declaration
        }  
        printf("\n");  
    }
-*/
+*/
+
+return (0);
+}

11-Switch-Statement.c

@@ -33,4 +33,48 @@ The default clause inside the switch statement is optional.
 
 Practice Program
 Create a calculator
-*/
+*/
+#include <stdio.h>
+
+int main (void)
+{
+printf("This is a basic calculator [a sign b]\nwhere 'a' & 'b' are numbers and 'sign' is one of those [+, -, *, /, %%]: \n");
+double a,b;
+char sign;
+printf("Enter number a : ");
+scanf("%lf", &a);
+
+printf("Enter number b : ");
+scanf("%lf", &b);
+
+printf("Enter the operaion you want to perform : ");
+scanf(" %c", &sign);
+
+switch(sign)
+{
+	case '+':
+		printf("%.2lf %c %.2lf = %.2lf\n", a, sign, b, a + b);
+		break;
+	case '-':
+		printf("%.2lf %c %.2lf = %.2lf\n", a, sign, b, a - b);
+		break;
+	case '*':
+		printf("%.2lf %c %.2lf = %.2lf\n", a, sign, b, a * b);
+		break;
+	case '/':
+		printf("%.2lf %c %.2lf = %.2lf\n", a, sign, b, a / b);
+		break;
+	case '%':
+		printf("%.2lf %c %.2lf = %d\n", a, sign, b, (int) a % (int) b);
+		break;
+
+	default :
+		printf("Error, please enter a correct operation\n");
+}
+
+
+
+
+return (0);
+}
+

TASKS/Task 001.c

@@ -4,4 +4,21 @@ Write a program that prints the alphabet in lowercase, followed by a new line.
 Print all the letters except q and e
 
 use printf
-*/
+*/
+#include <stdio.h>
+int main (void)
+{
+printf("Alpahbet letters in lowercase from a to z : \n");
+char c;
+for (c = 97; c <= 122; c++)
+	printf("%c ",c);
+putchar('\n');
+
+printf("Alpahbet letters in lowercase from a to z exept e and q : \n");
+for (c = 97; c <= 122; c++)
+	if (c != 'e' && c != 'q')
+		printf("%c ",c);
+putchar('\n');
+
+return (0);
+}

TASKS/Task 002.c

@@ -3,4 +3,23 @@ Write a program that asks and reads the score of a user
 If the score is less than 80, display to the user that they
 are not elgible to be enrolled.
 If the score is greater than or equal 80, they can be enrolled.
-*/
+*/
+
+#include <stdio.h>
+
+int main (void)
+{
+	int score;
+
+	printf("Enter your score : ");
+	scanf("%d", &score);
+
+	if (score >= 0 && score < 80)
+		printf("your score is %d, wich is under 80\nYou are not eligible to enroll to the program.\n", score);
+	else if (score >= 80 && score <=100)
+		printf("your score is %d\nYou can enroll to the program\n", score);
+	else if (score < 0 || score > 100)
+		printf("Error... please enter a valid score\n");
+
+	return (0);
+}

TASKS/Task 003.c

@@ -6,4 +6,22 @@ If the number is zero, display 'This is zero'
 
 NOTE: 'userInput' should be the number entered by the user.
 
-*/
+*/
+#include <stdio.h>
+
+int main (void)
+{
+	int num;
+
+	printf("Enter a number : ");
+	scanf("%d", &num);
+
+	if (num == 0)
+		printf("%d is Zero\n", num);
+	else if (num % 2 == 0)
+		printf("%d is Even\n", num);
+	else
+		printf("%d is Odd\n", num);
+
+	return (0);
+}

TASKS/Task 004.c

@@ -11,4 +11,20 @@ How old are you?: 65
 Output:
 Your name is David and you are 65 years old.
 
-*/
+*/
+
+#include <stdio.h>
+
+int main (void)
+{
+	char name[100];
+	int age;
+
+	printf("Enter your name : ");
+	scanf("%s", name);
+	printf("Enter your age : ");
+	scanf("%d", &age);
+
+	printf("Your name is %s, and you are %d years old.\n", name, age);
+return (0);
+}