c - 什么是错误 : expected ')' before ';' token|

Question

I'm doing a small starter project for my school,and im kinda new to all the programing,now when i try to build my program it says that i need ")" before ";" in line 21 and its asking for "";" before the "}" in line 22" and i have checked and there is a ";" before "}" but looks like my codeblocks is not recognizing it,or its just me being blind or me without a brain. Thanks for looking at my question.

实际错误代码

21|error: expected ')' before ';' token
22|error: expected ';' before '}' token

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
int main()

{
  int f,x;

  printf("Type in values of x: ");

  scanf("%d",&x);

  if (x <= 1)

  {(f = -2 * x);
      printf("%d",f);}

  else
      printf("Its not possible to do this function");


 if (1 < x < 5)

 {(f = sqrt(pow(x, 3)-(2*x));
        printf("%d",f);}

 else
    printf("Its not possible to do this function");

  return 0;
}

Answer 1

Clang 救援:

error: expected ‘)’ before ‘;’ token
   (f = sqrt(pow(x, 3) - (2 * x));
                                 ^

您缺少结束符 )。顺便说一下，那里根本不需要那对大括号:

 if (x > 1 && x < 5) // <-- BTW, the corrected condition
 {
     f = sqrt(pow(x, 3)-(2*x));
     printf("%d",f);
 }
 else
 { // <-- better to use braces symmetrically in if-else
    printf("Its not possible to do this function");
 }