Write a simple program

Question

1.00/5 (2 votes)

See more:

Write a Program to enter name and roll number and marks of two subject and then find the total and percentage then print the name , roll number, total and percent.

What I have tried:

C

/* Program Of School */
#include <stdio.h>
void main ()
{
 char Name[50];
 Int Roll, Mark1, Mark2;
 float per;
Printf("enter the name and roll number\n");
scanf("%c %d" , &name, &Roll);
printf("enter the marks of two subject");
scanf("%d %d" , &mark1, &mark2);
sum=mark1+mark2:
per=(mark1+mark2)/2.0;
printf("the name is %c and roll mo is %d, &name, &roll number);
printf("total marks are %d and percentage are %f, &sum, &per);
getch();
}

Posted 8-Mar-18 23:14pm

yashasvipathak

Updated 9-Mar-18 4:43am

CPallini

v2

Add a Solution

Comments

Patrice T 9-Mar-18 5:18am

And you have a question?

4 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Jochen Arndt · Answer 1 · 2018-03-08T23:36:00

Four problems:

With scanf() you have to pass pointers as arguments to get the values stored. But with printf() you have to pass integral values like int and float) by value.
The "%c" format sequence is for a single character. Use "%s" for strings.
With strings (char arrays) the object is already a pointer. So you have to pass the plain name or the address of the first element (Name or &Name[0]).
Your percentage calculation is wrong. The general formula is 100 * part / total.

CPallini · Answer 2 · 2018-03-08T23:58:00

You prograsm is full of bugs. You have to be careful while writing a C program:

C is case-sensitive, if you name a variable Mark1 then every its occurrence must be written exactly Mark1 ('mark1' is not an option). Likewise there is a printf function, not a 'Printf'.
scanf takes the address of the arguments whereas printf takes the value of the arguments.
The statement are terminated by semicolon (;) not colon (':').
The format specifier of strings is %s not '%c'.
You missed the trailing double quote of the format specifier in the last two printf calls

For sure I missed to report something...
Please note you are computing the average value of the two marks, not a percent at all.

Try

C

#include <stdio.h>
int main ()
{
  char name[50];
  int roll, mark1, mark2;
  int sum;
  double avg;
  printf("enter the name and roll number\n");
  scanf("%s %d" , name, &roll);
  printf("enter the marks of two subject\n");
  scanf("%d %d" , &mark1, &mark2);
  sum = mark1 + mark2;
  avg = (mark1 + mark2)/2.0;
  printf("the name is %s and roll mo is %d\n", name, roll );
  printf("total marks are %d and the average is %g\n", sum, avg);
  getchar();
  return 0;
}

OriginalGriff · Answer 3 · 2018-03-08T23:30:00

Won't work, unless your subjects only ever have single character names.
For scanf, "%c" means "read a single character" so if you type "mike" it will all fail.
Instead, use "%s" which reads a string, and prompt the user for separate lines worth of data: first prompt for the name, read the string, then prompt for the roll number and read that.
I'd also suggest that you do the same "prompt for one item, then read it" for the marks - it makes it easier for the user to follow.

KarstenK · Answer 4 · 2018-03-09T04:44:00

For solving your home work you should learn coding, so read the documentation about scanf and printf. You made some horrible error which some other answers already are pointing at.

If you hadnt installed Visual Studio now and learn how to use the debugger.

Tip: copy and debug some working sample code to understand C.

Write a simple program

4 solutions

Solution 2

Solution 3

Solution 1

Solution 4

Add your solution here

Preview 0