new file: Chapter_1-4_Project_1/Game.c

new file: Chapter_1-4_Project_1/Problem.c	new file: Chapter_5/01_Functions_and_Recursion.c	new file: Chapter_5/02_Function.c	new file: Chapter_5/03_Return_Value.c

Author: VickyRohilla862

Chapter_1-4_Project_1/Game.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+int main(){
+ srand(time(0));
+ int randomNumber = (rand()%100)+1;
+ int no_of_guesses = 0;
+ int guessed;
+ do{
+ printf("Guess the number: ");
+ scanf("%d", &guessed);
+ if(guessed>randomNumber){
+ printf("Enter a lower number!\n");
+ }else if(guessed<randomNumber){
+ printf("Enter a higher number!\n");;
+ }
+ no_of_guesses++;
+ }while(guessed != randomNumber);
+ printf("The number is: %d\n", randomNumber);
+ printf("You guessed the number in %d guesses\n", no_of_guesses);
+ 
+ return 0;
+}

Chapter_1-4_Project_1/Problem.c

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+/*
+Write a program that generates a random number and asks the player to guess it.
+If the player's guess is higher than the actual number, The program displays "Lower number please"
+If the player's guess is lower than the actual number, The program displays "Higher number please"
+When the user guesses the correct number, the program displays the number of guesses the player used to arrive at the number.
+
+Hint: Use loop and use a random number generator.
+*/

Chapter_5/01_Functions_and_Recursion.c

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+/*
+Somtimes our program is too big to keep track of a specific piece of code.
+Or sometimes we want to use a large code multiple times and places in a program.
+In these cases, instead of finding a code or writing a code again and again, we use functions.
+
+Basically, function is a way to break our code into chunks so that it is possible for a programmer to reuse them.
+*/

Chapter_5/02_Function.c

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+// What is a Function?
+/*
+A function is a block of code which performs a particular task.
+A function can be reused by the programmer in a given program any number of times.
+*/
+
+/*
+Syntax:
+ #include <stdio.h>
+ // function prototype
+ void display(); // datatype function_name(parameters);
+ int main(){
+ int a; // variable declaration
+ display(); // function call
+ return 0; // return statement
+ }
+ // function definition
+ void display(){
+ printf("Hi I am display function"); // The code that will execute on call
+ }
+*/
+
+/*
+Example:
+Instead of writing this:
+ #include <stdio.h>
+ int main(){
+ int a = 1;
+ int b = 2;
+ int c = a+b;
+ printf("The sum is %d", c);
+
+ int a1 = 12;
+ int b1 = 23;
+ int c1 = a1+b1;
+ printf("The sum is %d", c1);
+
+ int a2 = 2;
+ int b2 = 27;
+ int c2 = a+b;
+ printf("The sum is %d", c2);
+ return 0;
+ }
+
+we will write:
+ #include <stdio.h>
+ int sum(int, int);
+
+ int sum(int x, int y){
+ printf("The sum is %d\n", x+y);
+ }
+ int main(){
+ int a = 1;
+ int b = 2;
+ sum(a, b);
+
+ int a1 = 12;
+ int b1 = 23;
+ sum(a1, b1);
+
+ int a2 = 2;
+ int b2 = 27;
+ sum(a2, b2);
+ return 0;
+ }
+
+ output:
+ The sum is 3
+ The sum is 35
+ The sum is 29
+*/

Chapter_5/03_Return_Value.c

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+/*
+If we change the following code:
+ #include <stdio.h>
+ int sum(int, int);
+
+ int sum(int x, int y){
+ printf("The sum is %d\n", x+y);
+ }
+ int main(){
+ int a = 1;
+ int b = 2;
+ sum(a, b);
+
+ int a1 = 12;
+ int b1 = 23;
+ sum(a1, b1);
+
+ int a2 = 2;
+ int b2 = 27;
+ sum(a2, b2);
+ return 0;
+ }
+
+ output:
+ The sum is 3
+ The sum is 35
+ The sum is 29
+ 
+To:
+ #include <stdio.h>
+ int sum(int, int);
+
+ int sum(int x, int y){
+ //printf("The sum is %d\n", x+y);
+ return x+y;
+ }
+ int main(){
+ int a = 1;
+ int b = 2;
+ int c = sum(a, b);
+ printf("%d\n", c);
+
+ int a1 = 12;
+ int b1 = 23;
+ sum(a1, b1);
+
+ int a2 = 2;
+ int b2 = 27;
+ sum(a2, b2);
+ return 0;
+ }
+
+ output:
+ 3
+
+The return will only work if we don't use a printf statement in the function and we call the function inside a variable in main()
+*/