#include <stdio.h>

int main()

{

    int age = 18;

    float height = 1.85;

    char unit = 'm';

    printf("小明今年%d岁\n", age);

    printf("小明身高%f%c\n", height, unit);

    printf("%s","小明现在在慕课网上学习IT技术"); 

    return 0;

}

就是这样，运行失败