在VC6.0中编译，不管a，b，c输入什么值，结果都是显示"it is not triangle!"。
好像编写的sabc()函数并未被主函数调用，请大家帮我看看，是怎么回事？

#include "math.h"
#include "stdio.h"
double sabc(double a, double b, double c);     /*函数说明*/
 main()
{double a, b, c;
    double s;   
    printf("input the length of triangle sides:");
    scanf("%lf%lf%lf",&a,&b,&c);
        if(a+b<=c||b+c<=a||a+c<=b) /*两边之和大于第三边为三角形成立的条件*/
        printf("it is not triangle!\n");
        else
        s=sabc(a,b,c);
    printf("the area is:\n",s);
}

double sabc(double x, double y, double z)
{    double p, s;
    p=(x+y+z)/2;
    s=sqrt(p*(p-x)*(p-y)*(p-z));
    return (s);
}

#include "math.h"
#include "stdio.h"
double sabc(double a, double b, double c);     /*函数说明*/
main()
{double a, b, c;
    double s;     
    printf("input the length of triangle sides:");
    scanf("%lf%lf%lf",&a,&b,&c);
        if(a+b<=c||b+c<=a||a+c<=b) /*两边之和大于第三边为三角形成立的条件*/
        printf("it is not triangle!\n");
        else
        s=sabc(a,b,c);
    printf("the area is: %lf.\n",s);
}
 
double sabc(double x, double y, double z)
{    double p, s;
    p=(x+y+z)/2;
    s=sqrt(p*(p-x)*(p-y)*(p-z));
    return (s);
}

是的，谢谢，我刚刚也发现了，是我太粗心啦！

Ls调用函数没ok呢