请指出以下C程序的错误所在#include stdio.hmain(); / * main function * /float r,s; /*/*r is radius*/,/*s is area of cicular*/*/r=5.0 ;s=3.14159*r*r;printf(“%f\n”,s)

A. He was too fat to fit into his clothes
B. His parents bought him membership in a gym
C. He wanted to build his muscles

A. She wanted to have a baby
B. She'd had two children and gained weight
C. Her children kept telling her she was fat

A. Unhappy
B. good
C. very happy

A. It's important to eat well and do lots of exercise if you want to look and feel your best.
B. Exercising can be very bad for you. It's best to avoid it.
C. It's important to exercise, but you need to be careful and don't do too much.