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#include<stdio.h>
int main(){
  int n = 10;
  int *Primeslist;
  Primeslist = Prime(n);
  for(int i =0; i<n; i++){
   printf("%d\t",Primeslist[i]);
  }
   return 0;
}
int* Prime(int n){
  int count = 0;
  int *arr = (int*)malloc(sizeof(int)*n);
 /* if(n <= 0){
   return NULL;
  }*/
  for(int i = 2;i <= n; i++){ 
     if(i == 2 || i == 3 || i == 5 || i == 7){
 
        arr[count] = i;
        count++;
     }
     if(i%2!=0 && i%3 != 0 && i%5!=0 && i%7!=0){
 
      arr[count] = i;
      count++;
     }
 
  }
  return arr;
}
 

prog.c: In function ‘main’:
prog.c:5:16: warning: implicit declaration of function ‘Prime’ [-Wimplicit-function-declaration]
   Primeslist = Prime(n);
                ^~~~~
prog.c:5:14: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
   Primeslist = Prime(n);
              ^
prog.c: At top level:
prog.c:11:6: error: conflicting types for ‘Prime’
 int* Prime(int n){
      ^~~~~
prog.c:5:16: note: previous implicit declaration of ‘Prime’ was here
   Primeslist = Prime(n);
                ^~~~~
prog.c: In function ‘Prime’:
prog.c:13:20: warning: implicit declaration of function ‘malloc’ [-Wimplicit-function-declaration]
   int *arr = (int*)malloc(sizeof(int)*n);
                    ^~~~~~
prog.c:13:20: warning: incompatible implicit declaration of built-in function ‘malloc’
prog.c:13:20: note: include ‘<stdlib.h>’ or provide a declaration of ‘malloc’

Standard output is empty