🚀 Programming Example
Program to display numbers from 1 to n and their sum
Program to display numbers from 1 to n and their sum
#include<stdio.h>
int summation(int n);
void display1(int n);
void display2(int n);
main( )
{
int n;
printf("Enter number of terms : ");
scanf("%d", &n);
display1(n);
printf("\n");
display2(n);
printf("\n");
printf("sum = %d\n", summation(n));
}/*End of main()*/
int summation( int n)
{
if(n==0)
return 0;
return ( n + summation(n-1) );
}/*End of summation()*/
/*displays in reverse order*/
void display1(int n)
{
if( n==0 )
return;
printf("%d ",n);
display1(n-1);
}/*End of display1()*/
void display2(int n)
{
if( n==0 )
return;
display2(n-1);
printf("%d ",n);
}/*End of display2()*/
Enter number of terms : 10
10 9 8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 8 9 10
sum = 55
Press any key to continue . . .
First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.
Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.