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C programs QnA

Q. If sum of two integer is 14 and if one of them is 8 then find other integer. Ans: Well, this is very simple. Simply, one integer is 8 and sum of two integers is 14. So, we need to subtract the number 8 from their sum of 14 to get the second number. So, the second number is: 14 - 8 = 6 C-Program of this task Code---> #include<stdio.h> int main () { int num1 = 8 , num2 , sum = 14 ; num2 = sum - num1 ; printf ( "The second number is: %d" , num2 ); return 0 ; }
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C-program of calculate the sum of natural numbers up to N



In this C-program we will calculate the sum of natural numbers up to N. The number(N) will be taken from the user.

input:

The number.(i.e : 5,10,15 etc.)

output:

The sum up to N.

CODE---->


#include<stdio.h>
#include<conio.h>
 main()
{
int num,sum=0,i ;
printf("Please, Enter a positive number : ");
scanf("%d",&num);
if(num<0)
printf("\nYou have Entered a negative number. Please, try again.");
else
{
for(i=1;i<=num;i++)
sum=sum+i;
printf("\nThe sum of upto %d is : %d",num,sum);
}
getch();
}



Don't just read, write it, run it.....

RESULT:



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