C – If Else If

If else If: The if-else-if ladder statement executes only block among multiple we defined based on valid condition

Program to check the number is positive or negative or zero:

#include<stdio.h> int main() {             int n;             printf(“Enter a number : “);             scanf(“%d”, &n);             if(n>0)                         printf(“Positive number\n”);             else if(n<0)                         printf(“Negative number\n”);             else                         printf(“zero”);             return 0; }

Program to check the Character is Alphabet or Digit or Symbol:

#include<stdio.h> int main() {             char ch;             printf(“Enter character : “);             scanf(“%c”, &ch);             if(ch>=’A’ && ch<=’Z’)                         printf(“Upper case alphabet\n”);             else if(ch>=’a’ && ch<=’z’)                         printf(“Lower case alphabet\n”);             else if(ch>=’0′ && ch<=’9′)                         printf(“Digit\n”);             else                         printf(“Symbol \n”);             return 0; }

Program to find the biggest of 3 numbers:

#include<stdio.h> int main() {             int a, b, c;             printf(“Enter 3 numbers : “);             scanf(“%d%d%d”, &a, &b, &c);             if(a>b && a>c)                         printf(“A is big\n”);             else if(b>c)                         printf(“B is big\n”);             else                         printf(“C is big\n”);             return 0; }

Program to check the input year is Leap or not:

• If the year divisible by 400 is called Leap year
• If the year divisible by 4 is called Leap year.
• If the year divisible by 100 is not leap year (except 400 multiples)

#include<stdio.h> int main() {             int n;             printf(“Enter year : “);             scanf(“%d”, &n);             if(n%400==0)                         printf(“Lep year \n”);             else if(n%4==0 && n%100!=0)                         printf(“Lep year \n”);             else                         printf(“Not leap year \n”);                         return 0; }

C program to calculate electricity bill based on units

• 0-100 units -> 0.8 per unit;
• 101-200 units -> 1.0 per unit;
• 201-300 units -> 1.2 per unit;
• Above 300 -> 1.5 per unit;

#include<stdio.h> int main() {             int units;             float bill;             printf(“Enter units consumed : “);             scanf(“%d”, &units);             if(units>0 && units<=100)                         bill = units*0.8;             else if(units>100 && units<=200)                         bill = (100*0.8) + (units-100)*1.0;             else if(units>200 && units<=300)                         bill = (100*0.8) + (100*1.0) + (units-200)*1.2;             else                         bill = (100*0.8) + (100*1.0) + (100*1.2) + (units-300)*1.5;                  printf(“Bill to pay : %f \n” , bill);             return 0; }