输出哪儿错了

#include <stdio.h>

int main(){

    int age = 18;

float height = 1.85;

char unit = 'm';

printf("小明今年%d\n", age);

printf("小明身高%f%c\n", height, unit);

printf("小明现在在慕课网上学习IT技术"); 

return 0;

}