Write a C program to calculate a series of integer numbers as 1+2+3+......+n

Here 1+2+3+…….+n is a simple series where each number can be added using a single loop. At first take a variable SUM and initialize it by Zero. Then add each number of the series successively. Then print the SUM. //1+2+3+..............+n #include <stdio.h> main(){   int i,n,SUM=0;   printf("Insert the last number: ");   scanf("%d",&n);   for(i=1;i<=n;i++)        SUM=SUM+i;   printf("Total: %d",SUM);   return 0;  }