作业帮C语言 编写三角形面积计算/*计算三角形面积*/#include double sin(double x);#define PI 3.14159265int main(){double a,b,ang_c,s;scanf("%lfa=3%lfb=4%lfc=45",&a,&b,&ang_c);s = a * b * sin(ang_c * PI / 180.0) / 2.0;printf("The area is %f\n"
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C语言 编写三角形面积计算/*计算三角形面积*/#include double sin(double x);#define PI 3.14159265int main(){double a,b,ang_c,s;scanf("%lfa=3%lfb=4%lfc=45",&a,&b,&ang_c);s = a * b * sin(ang_c * PI / 180.0) / 2.0;printf("The area is %f\n"
C语言 编写三角形面积计算
/*计算三角形面积*/
#include
double sin(double x);
#define PI 3.14159265
int main()
{
double a,b,ang_c,s;
scanf("%lfa=3%lfb=4%lfc=45",&a,&b,&ang_c);
s = a * b * sin(ang_c * PI / 180.0) / 2.0;
printf("The area is %f\n",s);
return 0;
}
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Linking...
求三角形面积.obj :error LNK2001:unresolved external symbol "double __cdecl sin(double)" sin@@YANN@Z)
Debug/求三角形面积.exe :fatal error LNK1120:1 unresolved externals
Error executing link.exe.
求三角形面积.exe - 2 error(s),0 warning(s)
C语言 编写三角形面积计算/*计算三角形面积*/#include double sin(double x);#define PI 3.14159265int main(){double a,b,ang_c,s;scanf("%lfa=3%lfb=4%lfc=45",&a,&b,&ang_c);s = a * b * sin(ang_c * PI / 180.0) / 2.0;printf("The area is %f\n"
#include <stdio.h>
#include <math.h>
//double sin(double x);
#define PI 3.14159265
int main()
{
double a, b, ang_c, s;
scanf("%lf %lf %lf", &a, &b, &ang_c);
s = a * b * sin(ang_c * PI / 180.0) / 2.0;
printf("The area is %f\n", s);
return 0;
}
/*
要不然自己实现sin函数,否则引进math头文件
还有scanf 仔细看看,我怎么写的
*/
