수다닷컴

삼각형 원 사각형의 넓이 구하는 프로그램 짜는 건데요ㅜㅜ
값이 사각형은 올바로 나오는데 삼각형과 원은 값이 이상하게 나와요ㅠㅠ 뭐가 잘못된거일까요?ㅜ질문 내용 :
#include stdio.h
double triangle(int bottom, int height);
double circle(int radius);
int rectangle(int length, int width);
int main (void)
{
int bottom;
int height;
int radius;
int length;
int width;
double triangleArea;
double circleArea;
int rectangleArea;

printf(Triangle Area\n);
printf(Enter the bottom of triangle:);
scanf(%d, &bottom);
printf(Enter the height of triangle:);
scanf(%d, &height);
printf(=============================================\n);
printf(Circle Area\n);
printf(Enter the radius of Circle:);
scanf(%d, &radius);
printf(=============================================\n);
printf(Rectangle Area\n);
printf(Enter the length of Rectangle:);
scanf(%d, &length);
printf(Enter the width of Rectangle:);
scanf(%d, &width);
triangleArea = triangle(bottom, height);
circleArea = circle(radius);
rectangleArea = rectangle(length, width);
printf(The Area of triangle is : %d\n, triangleArea);
printf(The Area of circle is : %d\n, circleArea);
printf(The Area of rectangle is : %d\n, rectangleArea);
}

double triangle(int bottom, int height)
{
double triangleArea;
triangleArea = bottom * height / 2;
return triangleArea;
}

double circle(int radius)
{
double circleArea;
circleArea = radius*radius*3.14;
return circleArea;
}
int rectangle(int length, int width)
{
int rectangleArea;
rectangleArea = length*width;
return rectangleArea;
}

신청하기