#include<stdio.h>
int main(void)
{
    float weight;
    float value;
    printf("Are you worth your weight in rhodium?\n");
    Printf("Let's check it out.\n");
    printf("Please enter your weight in pounds:");
    scanf("%f",&weight);
    value=770*weight*14.5833;
    printf("Your weight in rhodium is worth $%.2f.\n",value);
    printf("You are easily worth that! If rhodium prices drop,\n");
    printf("eat more to maintain your value.\n");
    getch();
    return 0;
   
}

  [Linker error] undefined reference to `Printf'
  ld returned 1 exit status

这是什么原因啊。

#include<stdio.h>
#include<stdlib.h>
int main(void)
{
    float weight;
    float value;
    printf("Are you worth your weight in rhodium?\n");
    printf("Let's check it out.\n");
    printf("Please enter your weight in pounds:");
    scanf("%f",&weight);
    value=770*weight*14.5833;
    printf("Your weight in rhodium is worth $%.2f.\n",value);
    printf("You are easily worth that! If rhodium prices drop,\n");
    printf("eat more to maintain your value.\n");
    getchar();
    return 0;
    
}

你的printf中p大写了，应该为小写

将一个地方改一下就OK 了
printf（"Let's  check it out:\n"）;
printf表示输出  一定要小写，在语言中，编译时对字母的大小写是很敏感的，所以以后多注意哈就好了
希望能对你有帮助

谢谢，在你回答前找到了，帖子也结了，不好意思 。

谢谢。