pg149_q014.c

#include <stdio.h>

int main (int argc, char* argv[] ){
    /* Write a program to read an input integer n from user
    * Validate that input should be in the range 1 to 1000 - both inclusive
    * If input is outside of this range then print "Invalid input" and skip rest of processing
    * If input was valid then, using a while loop, print the sum of first n natural numbers on a line by itself with no trailing  newline */

    return 0;
}