Question

Write a program in C++ to calculate the sum 1+x+x+ x2 +....n terms.

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Answer 1

Explanation:

#include<stdio.h>

int main() {

int n,i;

int sum=0;

printf("Enter the n i.e. max values of series: ");

scanf("%d",&n);

sum = (n * (n + 1)) / 2;

printf("Sum of the series: ");

for (i =1;i <= n;i++) {

if (i!=n)

printf("%d + ",i); else

printf("%d = %d ",i,sum);

}

return 0;

}