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I have a problem with condition with what should go into array.
Array(Student),i,n was declared as int , and it works perfect with numbers, but if I enter any letter or some other sign (, . ; : " '...

Well, i have a problem. i'm interested that is it possible to repeat a program with command goto or some other order i C ?
For example


main()
{



.....some code...

i works like a charm id just added sum=0; after printf of the sum :) thank you Very much !!!

Here is the task and the problem in it,i dont know whats wrong


//////////////////////////////////////////////
//How to calculate Sum ///////////////////////
//when you have x betwen...

Thank you VERY much, im so grateful for your help. The reason for sumB is my mistake cause ive tried so many things to do the job,and forget to delete it. The program originaly is typed for region...

Well Claudia, I appreciated your answer, but after 12h and counting in font of the monitor, ill try to resolve this problem ,but i would be very gratefull too you, if you could tell me a little bit...

Ive tried for loop but it gives me incorect value



for (i=1;i<=n;i++)
{
Sum=(1+x+pow(x,i));

}

Could anywhone help me to write sum for S=(1+x+x^i)+(1+x+x^(i+1) ) + ... + (1+x+x^n) ? Exponent i i staking values from i=1 to i=n . User gives n.
Thank You very much in advance :).