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#include <stdio.h>
#include<math.h>
 
	float f1(int x, int a)
{ float y;
if(a>=1)
y=(pow(x,a)+sqrt(x)+3)%a;
else if(a>1&&a<x)
y=pow(a,x+2)+exp(a);
return y;
}
void main()
{
	int x,a;
	float y;
	printf("enter 2 integers \n");
	scanf("%d%d"&x,&a);
	y=f1(x,a);
	printf("%f"y);
 
}

prog.c: In function ‘f1’:
prog.c:7:23: error: invalid operands to binary % (have ‘double’ and ‘int’)
 y=(pow(x,a)+sqrt(x)+3)%a;
   ~~~~~~~~~~~~~~~~~~~~^
prog.c: At top level:
prog.c:12:6: warning: return type of ‘main’ is not ‘int’ [-Wmain]
 void main()
      ^~~~
prog.c: In function ‘main’:
prog.c:17:14: error: invalid operands to binary & (have ‘char *’ and ‘int’)
  scanf("%d%d"&x,&a);
        ~~~~~~^
prog.c:19:13: error: expected ‘)’ before ‘y’
  printf("%f"y);
             ^
prog.c:19:11: warning: format ‘%f’ expects a matching ‘double’ argument [-Wformat=]
  printf("%f"y);
           ^
prog.c:15:8: warning: variable ‘y’ set but not used [-Wunused-but-set-variable]
  float y;
        ^

Standard output is empty