write a program that prompts the user to input a positive integer , if the user enters zero or a negative value for nu, it prompts user to input num again and repets this process untill unser inputs a correct value. it then display the sum of the numbers 1 to num
i am having difficulties to do the loop on how the program will check whether the entered num is 0 or negative...
Jump to PostFirst off, we don't do other people's homework for them. Second, we don't do other people's homework for them. And third, we don't do other people's homework for them. Sensing a pattern here yet?
No one here will simply hand you a solution on a silver platter. If you show …
Jump to PostYour code?
Jump to Postif ( num <= 0 ) will check if your input is zero or smaller(negative).
First off, we don't do other people's homework for them. Second, we don't do other people's homework for them. And third, we don't do other people's homework for them. Sensing a pattern here yet?
No one here will simply hand you a solution on a silver platter. If you show us what you've done, what you've tried to do, and what problems you've had with it, then we'll be happy to help. If you have specific questions, we can answer them, or at least point you in the right direction. If you have a program with a bug you can't swat on your own, we'll be glad to assist, so long as you pay attention to the forum rules and post sensible questions in an intelligent manner that we have some reasonable hope of answering.
But just cutting and pasting an assignment into a message, without even prefacing it with something like, "I have this homework problem that I can't solve...", is likely to get you booted from the message boards here and elsewhere - if you're lucky. What happens to you if you are unlucky is... well... let's just say that this guy probably won't be trying that again, on that forum or this one.
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Now, if you actually don't know how to create a program that fits the requirements... hmmmn. Reading the book is definitely called for. As is speaking to the professor; while some can be a--holes about office hours, most are more than willing to give extra help, if only to keep their class grades from slipping to the point where they get re-assigned to teach remedial basketweaving.
i am sorry though i did not put my question right i am having difficulties to do the loop on how the program will check whether the entered num is 0 or negative...
#include<stdio.h>
#include<stdlib.h>
int main()
{
int x=2;
int num;
printf("enter a value: ");
scanf("%d", &num);
while((num%x!=0)&(num!=x)){
printf("Enter another number: ");
scanf("%d", &num);
}
system("pause");
return 1;
}
sample of my codes
Your code?
#include<stdio.h>
#include<stdlib.h>
int main()
{
int x=2;
int num;
printf("enter a value: ");
scanf("%d", &num);
while((num%x!=0)&(num!=x)){
printf("Enter another number: ");
scanf("%d", &num);
}
system("pause");
return 1;
}
if ( num <= 0 ) will check if your input is zero or smaller(negative).
The program would be better if you used a do loop instead of while loop. And you don't need to use the mod % operator in this program like you did in your other program.
start of loop
display prompt to enter a number
call scanf() to get the number in variable named N.
if number is <= 0 then go back to start of loop
print the sum of all numbers from 1 to N. You need another loop for this
#include<stdio.h>
#include<stdlib.h>
int main()
{
int num, i;
int sum=0;
do{
printf("enter a number: ");
scanf("%d", &num);
}
while(num<=0);
if(num<=0){
printf("enter another value: ");
scanf("%d", &num);
}
for(i=1;i<num;i++){
sum=sum+num;
}
printf("%d", sum);
system("pause");
return 1;
}
i end up with this final code :)
will the above code display the sum from 1 to num?
Run the program and find out if it works correctly or not.
line 11 has a semicolon at the end -- remove the semicolon
The if statement on line 12 is not needed so you should delete it. The while should look like this:
while( <condition here> )
{
// code here
}
Your for loop on line 16 should look like:
for( i=1; i<=num; i++)
{
sum=sum+num;
}
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