可以使用

#define MAX 100int main (int argc, char *argv[]){    printf("MAX is %d\n", MAX);    return 0;}

 

gcc -E filename.c -o output.c

来

output.c:

# 1 "./def.c"# 1 "
     
      "# 1 "
      
       "# 1 "./def.c"intmain (int argc, char *argv[]){   printf("MAX is %d\n", 100);   return 0;}