慕课在线编辑器

代码提交代码

#include <stdio.h>

#define typename(x) _Generic((x),        /* Get the name of a type */             \
                                                                                  \
        _Bool: "_Bool",                  unsigned char: "unsigned char",          \
         char: "char",                     signed char: "signed char",            \
    short int: "short int",         unsigned short int: "unsigned short int",     \
          int: "int",                     unsigned int: "unsigned int",           \
     long int: "long int",           unsigned long int: "unsigned long int",      \
long long int: "long long int", unsigned long long int: "unsigned long long int", \
        float: "float",                         double: "double",                 \
  long double: "long double",                   char *: "pointer to char",        \
       void *: "pointer to void",                int *: "pointer to int",         \
      default: "other")

int main()
{
    int a=1,b=2;
    float c=3.14159,d=0;
    printf("a type: %s, b type: %s, c type: %s, d type: %s\n",typename(a),typename(b),typename(c),typename(d));
    a=(float)b+(float)c;
    printf("a=b+c, a=%d\n",a);
    printf("type (b+c): %s\n",typename((int)b+(int)c));
    d=(int)b+(int)c;
    printf("d=b+c, d=%f\n",d);
    return 0;
}#include <stdio.h>

运行结果