[c-prog] Please help me to solve this problem

[赵鹏飞]

#include<stdio.h>
   int main()
  {
    int a,b,c;
      printf("They are bidagelasi numbers\n");
  
  for(a = 0;a <= 500;++ a){
       for(b = 0; b <= 500;++ b){
  
        for(c = 0;c < 500;++ c){
             if((a * a == c * c + b * b){
               printf("The three numbers are : %d%d%d\n",a,b,c);
     }
     
       }
    
    }
   } 
    return 0;
  }
   
   
   
  I write the programme like this ,but when I  complie it ,the computer thell me
    error   in function'main'
               parse error before '{'
               At top level:
               parse error before'return'
   
  Please help solve this problem,tell me how to correct it
   And other question is what's the meaning of "At top level"
   
  Hoping to your response,thank you.



       
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