#include<stdio.h>
mian(){    
    float base,height,area ;
     printf("Wellcome to triangle \n");
     printf("input base.1 : ");
    scanf("%f",&base);
    
     printf("input height.2 : ");
    scanf("%f",&height);
    
    area = 0.5*base*height ;
     printf("answer is : ",area);
}
แล้วขึ้นกับว่า C:\Users\User\Documents\collect2.exe    [Error] ld returned 1 exit status
คือผิดตรงไหนครับ???