[URGENT] Statistical Calculator

[boyagin]

I really need help on this for my exercise, I do not wish to see any losses mark. I beg someone could help me to solve this. By the way, i am just a college student. Maybe this sounds easy to me but I'm just a beginner. HELP PLEASE.

Question Statistical Calculator
Write a program to read in a sequence of examination mark from a text file named as input.txt and produce the mean, and standard deviation of the marks. Your program should also produce a bar chart for each grade where the range of mark is given as below.

Grade Marks Range
A 80-100
B 70-79.9
C 50-69.9
D 40-49.9
F 0-39.9

Output the result to another text file named as output.txt.

There is not limitation for the interface or menu design. Be innovative and creative!!


Im having problem with the standard devation.
I think the bar chart should be okay

cout <<"Grade A: " ;
		myfile << "Grade A: ";
		for(int y=0 ; y < 11 ; y++){
			if(x[y]<=100 && x[y]>= 80){
				cout << "*" ;
				myfile << "*" ;
			}	
		}
	}

[webJose]

boyagin wrote:

I really need help on this for my exercise, I do not wish to see any losses mark. I beg someone could help me to solve this. By the way, i am just a college student. Maybe this sounds easy to me but I'm just a beginner. HELP PLEASE.

Question Statistical Calculator
Write a program to read in a sequence of examination mark from a text file named as input.txt and produce the mean, and standard deviation of the marks. Your program should also produce a bar chart for each grade where the range of mark is given as below.

Grade Marks Range
A 80-100
B 70-79.9
C 50-69.9
D 40-49.9
F 0-39.9

Output the result to another text file named as output.txt.

There is not limitation for the interface or menu design. Be innovative and creative!!

THANK YOU!
not-a-native-english-speaker

We won't do your homework. Sorry. Come back when you have a specific question and can demonstrate you have done an effort.

[boyagin]

I've solved it. Thank You