if- else Ladder স্টেটমেন্ট

if(condition1)
{
  statements
}else if(condition2)
{
  statements
}
.
.
else
{
 statements
}

#include<stdio.h>
​
int main()
{
    int x, y, z, result;
​
        printf("Enter 3 Number: ");
        scanf("%d %d %d", &x, &y, &z);
​
        if(x>y && x>z)
        {
            result = x;
        }else if(y>x && y>z)
        {
            result = y;
        }else
        {
            result = z;
        }
​
        printf("Bigger Number: %d\n", result);
​
    return 0;
}

Enter 3 Number: 57 23 34
Bigger Number: 57

#include<stdio.h>
​
int main()
{
    int year;
​
        printf("Enter Year: ");
        scanf("%d", &year);
​
        if(year%400 == 0)       /*if(year%4==0) && (year%400==0) || (year%100==0)*/
        {
            printf("Leap Year!\n");
        }else if(year%100 == 0)
        {
            printf("Not Leap Year!\n");
        }else if(year%4 == 0)
        {
            printf("Leap Year!\n");
        }else
        {
            printf("Not Leap Year!\n");
        }
​
    return 0;
}

Enter Year: 2020
Leap Year!

#include<stdio.h>
​
int main()
{
    int mark;
​
    printf("Enter your mark: ");
    scanf("%d", &mark);
​
    if(mark < 0 || mark > 100)
    {
        printf("Wrong Input, please make it 0-100! \n");
    }else if(mark >= 80)
    {
        printf("You got A+!");
    }else if(mark >= 70)
    {
        printf("You got A!");
    }else if(mark >= 60)
    {
        printf("You got A-!");
    }else if(mark >= 50)
    {
        printf("You got B!");
    }else if(mark >= 40)
    {
        printf("You got C!");
    }else if(mark >= 33)
    {
        printf("You got D!");
    }else
    {
        printf("You're Failed!");
    }
​
    return 0;
}

Enter your mark: 80
You got A+!

#include<stdio.h>
​
int main()
{
    int bangla, english, math, science, social, total, percentage;
​
    printf("Bangla Mark: ");
    scanf("%d", &bangla);
​
    printf("\nEnglish Mark: ");
    scanf("%d", &english);
​
    printf("\nMath Mark: ");
    scanf("%d", &math);
​
    printf("\nScience Mark: ");
    scanf("%d", &science);
​
    printf("\nSocial Mark: ");
    scanf("%d", &social);
​
    total = bangla+english+math+science+social;
    percentage = total/5;
​
    printf("\nTotal Marks = %d/500", total);
    printf("\nTotal Percentage = %d%% \n", percentage);
​
    if(percentage <40)
    {
        printf("You have failed! \n");
    }else if((percentage >40) && (percentage <55))
    {
        printf("You got C! \n");
    }else if((percentage >55) && (percentage <65))
    {
        printf("You got B! \n");
    }else if ((percentage >65) && (percentage <80))
    {
        printf("You got A! \n");
​
    }else if((percentage >80) && (percentage <100))
    {
        printf("You got A+! \n");
    }else
    {
        printf("Invalid input! try again \n");
    }
​
    return 0;
}
​

Bangla Mark: 78 
English Mark: 79 
Math Mark: 90
Science Mark: 89 
Social Mark: 85
​
Total Marks = 421/500 
Total Percentage = 84% 
You got A+!