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Homework I/Homework_I.c

+/**
+ * File:        Homework_I.c
+ * Author:      Viktor Akulich
+ * Created:     26.09.2018
+ * Last edit:   01.10.2018
+ *
+ * Description: Calculating Function y = f(x)
+ *              
+ */
+#include <stdio.h>
+#include <math.h>		//include this labrary for sqrt() and pow() functions
+int main(){
+	
+	int i;				// use this variable for FOR LOOPS 
+	float i_func[15];  	//An array of input values of the function
+	float out_func; 	//The result of the function if it is possible 
+	float A;  			//User input starting point
+	float B;  			//User input ending point
+	float C;  			//User input step's coefficient 
+	float H;  			//User input step
+						//use floats because the input and result
+						// can be any real number.
+						
+						
+						
+						//Ask user different variables values.
+	printf("Insert the starting value: \n");
+	scanf("%f", &A);	//get the starting value
+	printf("Insert the endingg value:\n");
+	
+	
+	
+	
+	
+	while(1)
+	{  
+		scanf("%f", &B);
+		if (B>A)
+		{  
+			break; 		
+		}
+		else
+		{
+			printf("Please repeat!!!!\n");
+			printf("Insert the number which is bigger than starting value :\n");
+		}
+	}
+	printf("Insert the step value:\n");
+		//Cheak  user input by implementing while loop 
+		//it always true because 1 is TRUE 
+		//is always True, so the only way to stop it use
+		//break statement
+		//If it meets the requirement such as B>A then we
+		// stop the loop and go to the next loop
+		//If it doesn't meet the requrement we ask user
+		// to repeat the operation and start the loop from the beginning
+	
+	
+	
+	
+						
+	while(1)
+	{
+		scanf("%f", &H);
+		if (H > 0)
+		{		
+			break;	
+		}
+		else
+		{
+			printf("Please repeat. Insert the number which is bigger than 0:\n");
+		}
+	}
+	
+	printf("Insert the step's coeficient value should be >=1:\n");
+	while(1)
+	{
+		scanf("%f", &C);
+		if (C>=1)
+		{
+			break;
+		}
+		else
+		{
+			printf("Please repeat. Insert the number which is bigger or equal to one:\n");
+		}
+	}
+	//Do almost the same operations for  step value and its 
+	//coefficient as well.The difference is only in the condition after
+	//IF statement and text inside PRINTF statement
+	
+	
+	
+						
+	i_func[0]=A; 		
+	for(i = 1; i < 15; i++)
+	{		
+		i_func[i] = i_func[i-1] + (H * pow(C,(i - 1)));							
+	}
+	//Create all inputs for the function
+	//Create 0th element, which I will use to create other values. 	
+	//use for loop in order to fill the array with appropriate values
+	//fill each element by adding to previous element C^(i-1)*H,  
+	
+	
+	printf("  x\t\ty\n");			
+	//make two colums X and Y by using \t twice 
+	//otherwise Y doesn't coinside with numbers
+	
+	
+	
+	
+	for(i = 0; i < 15; i++){ //use the FOR LOOP to fill two collums with X and 		
+							 //Y values, and cheak wheather Y value is exist, Not 
+						     //available or it is a complex number 
+		
+		if (i_func[i] >= B)
+		{				//by defenitions the values couldn't 
+						//be more than ending point, but it might happen that 
+			break;		//when the array was filling in some values exceeded 
+						//the ending point(B) so I have to cheak. 
+						//if we find the values which are greater 
+						//than B we could break the loop beacause the other 
+						//values in array are also bigger than B
+		}						
+		if ((i_func[i] == 0)||(i_func[i] == 1))
+		{
+			printf("  %f\tNot available\n", i_func[i] );
+			//If Statement checks wheather the Y value is NOT available.
+			//This happens only when the denominator is equal to zero. 
+			//It only happens when X=1 or X=0  
+		}
+		else if((pow(i_func[i], 3) > 4)||(( i_func [i] > 0) && ( i_func [i] < 1)))
+		{
+			printf("  %f\tComplex Number\n", i_func[i] );
+			//IF statement checks whether the Y value is a Complex number.
+			// This is only happens when we have a square root 
+			//out of negative number.It only happens when 
+			//X[0,1]and X > qubic root out of four 
+			
+		}
+		else
+		{		//if our value can be found then we use next 
+				//opearations to fidnd it
+			out_func = (( i_func[i] + 4 ) / 
+			 (sqrt(pow(i_func[i], 2) - i_func[i]))) * 
+			 pow( i_func[i], 2) * 
+			 sqrt(4 - pow(i_func[i], 3) );
+			printf("  %f\t%f\n", i_func[i],out_func);
+				//use the variable output_func just for 
+				//making more clear how the values of 
+				//the function is calculated
+				 
+				//Don't use an array for output values because 
+				//I just need to find the values and print them,
+		}
+	} 
+	return 0;
+}
+