13)Write a program to add first seven terms of the following series using a for loop. 1/1! + 2/2! + 3/3! +4/4!+5/5!+6/6!+7/7!

 source file name: Factseries.C

#include <stdio.h>

int  main()
{
float tn,n,fv;
float sum=0;
//clrscr();
for(n=1;n<=7;n++)
{
tn=n;
fv=1;
for(;tn>0;tn--)
{
fv=fv*tn;
}

sum=sum+(n/fv);
}
printf(" factorial series sum: %f ",sum);
//getch();

return 0;
}

output:

 factorial series sum:2.718056