Examples of C part 67 display series in AP along with sum of given common Difference and number of terms

Program :

#include<stdio.h>
main()
{
//an=a+(n-1)d
  int i,n;
  float sum=0,num1,diff,lastnum,seriesFirstNum;

  printf("Enter first number of the series\n");
  scanf("%f",&num1);
  printf("Enter Common difference\n");
  scanf("%f",&diff);
  printf("Enter number of terms in the series\n");
  scanf("%d",&n);
  seriesFirstNum=num1;
lastnum=(float)(num1+((n-1)*diff));
  for(i=1;i<=n;i++)
  {
   sum+=seriesFirstNum;
   seriesFirstNum+=diff;
  }

  seriesFirstNum=num1;
  printf("Terms present in the Series are:\n");
    for(i=1;i<=n;i++)
  {
     if(i<n)
     {
      printf("%.2f,",seriesFirstNum);
      seriesFirstNum+=diff;
     }
     else
     {
      printf("%.2f\nSum of the Series is=%.2f\n",seriesFirstNum,sum);
      seriesFirstNum+=diff;
     }
  }
}

Output:
Enter first number of the series
45
Enter Common difference
6
Enter number of terms in the series
10
Terms present in the Series are:
45.00,51.00,57.00,63.00,69.00,75.00,81.00,87.00,93.00,99.00
Sum of the Series is=720.00
Explanation:
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