/* * File: addlist.c * --------------- * This program adds a list of numbers.  The end of the input * is indicated by entering a blank line as a sentinel value. */#include <stdio.h>#include "genlib.h"#include "simpio.h"#include "strlib.h"main(){    int total;    string line;    printf("This program adds a list of numbers.\n");    printf("Signal end of list with a blank line.\n");    total = 0;    while (TRUE) {        printf(" ? ");        line = GetLine();        if (StringEqual(line, "")) break;        total += StringToInteger(line);    }    printf("The total is %d\n", total);}