ตัดเกรด 1 (grading1)

พื้นที่วงกลม2 ครั้บผม

#include<stdio.h>
main()
{
int b;
float result;
printf("Please Enter redius");
scanf("%d",&b);
result=3.14*b*b;
printf("area is %.2f",result);

}

การแสดงผล

Please Enter redius 5
area is 78.50
process returned 13 <0xD>  execuntion time : 1.997 s
Press any key to  continue.
_

คีย์บอร์ด 3 ครั้บผม

#include<stdio.h>

main()

{

int a,b,c;

printf("plaese Enter number 1:");

scanf("%d",&a);

printf("plaese Enter number 2:");

scanf("%d",&b);

printf("plaese Enter number 3:");

scanf("%d",&c);

printf("%d,%d,%d",a,b,c);

}

คูณ

#include<stdio.h>

main()

{

  int a,b,sum;

  printf("plaese Enter number1:");

  scanf("%d",&a);

  printf("plaese Enter number2:");

  scanf("%d",&b);

  sum=a*b;

  printf("%d*%d is %d",a,b,sum);

}

บวก

#include<stdio.h>

main()

{

  int a,b,sum;

  printf("plaese Enter number1:");

  scanf("%d",&a);

  printf("plaese Enter number2:");

  scanf("%d",&b);

  sum=a+b;

  printf("%d+%d is %d",a,b,sum);

}