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#include "math.h"
#include "stdio.h"
integral(float a,float b,(*fun)(float,float))
{
float result;
result=(*fun)(a,b);
printf("%f\n",result);
}
void main()
{
float f1(float,float);
float f2(float,float);
float f3(float,float);
float f4(float,float);
float f5(float,float);
float (*fun);
float a,b;
    printf("enter a and b");
    scanf("%f,%f",&a,&b);
printf("f1=");
    integral(a,b,f1);
printf("f2=");
integral(a,b,f2);
printf("f3=");
integral(a,b,f3);
printf("f4=");
integral(a,b,f4);
printf("f5=");
integral(a,b,f5);
}
float fl(float a,float b)
{
float sum;
sum=1.0/2*(b*b-a*a)+1.0/3*(b*b*b-a*a*a);
return(sum);
}
float f2(float a,float b)
{
float sum;
sum=2.0/3*(b*b*b-a*a*a)+1.0/2*(b*b-a*a);
return(sum);
}
float f3(float a,float b)
{
float sum;
sum=exp(b)-exp(a)+b-a;
return(sum);
}
float f4(float a,float b)
{
float sum;
sum=b-a+1.0/3*(b*b*b-a*a*a)+b*b-a*a;
return(sum);
}
float f5(float a,float b)
{
float sum;
sum=1.0


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#include <stdio.h>
#include <graphics.h>
void main()
{
  int x0,y0,x1,y1,driver,mode,i;
  driver=VGA;
  mode=VGAHI;
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