Program to make a simple calculator using Switch case.
-----------------------------------------
Program:
#include <stdio.h>
int main()
{
char operator;
float num1, num2, result;
printf("Enter an operator (+, -, *, /): ");
scanf("%c", &operator);
printf("Enter two operands: ");
scanf("%f %f", &num1, &num2);
switch(operator)
{ case '+':
result = num1 + num2;
printf("%.2f + %.2f = %.2f", num1, num2, result);
break;
case '-':
result = num1 - num2;
printf("%.2f - %.2f = %.2f", num1, num2, result);
break;
case '*':
result = num1 * num2;
printf("%.2f * %.2f = %.2f", num1, num2, result);
break;
case '/':
result = num1 / num2;
printf("%.2f / %.2f = %.2f", num1, num2, result);
break;
default:
printf("Error: Invalid operator!");
break;
}
return 0;
}
------------------------------------------
#switch_case

Program to enter a number between 1-12 and print the corresponding month using switch case .
--------------------------
Program:
#include<stdio.h>
int main()
{ int month;
printf("Enter month number: ");
scanf("%d",&month);
switch(month)
{ case 1:
printf("January");
break;
case 2:
printf("February");
break;
case 3:
printf("March");
break;
case 4:
printf("April");
break;
case 5:
printf("May");
break;
case 6:
printf("June");
break;
case 7:
printf("July");
break;
case 8:
printf("August");
break;
case 9:
printf("September");
break;
case 10:
printf("October");
break;
case 11:
printf("November");
break;
case 12:
printf("December");
break;
default:
printf("Invalid month number");
break;
}
return 0;
}
---------------------------
#switch_case

Program to print numbers from 1 to n using for loop.
-----------------------------------
Program:
#include<stdio.h>
int main() {
int i,n;
printf("Enter value of n:");
scanf("%d",&n);
for(i=1; i<=n; i++)
{
printf("%d ", i);
}
return 0;
}
---------------------------------
#for_loop

Program to print even numbers from 0 to n using for loop.
-------------------------------
Program:
#include <stdio.h>
int main() {
int i,n;
printf("Enter the value of n:");
scanf("%d",&n);
for(i=0; i<=n; i+=2)
{
printf("%d \n", i);
}
return 0;
}
------------------------------------
#for_loop

@c_programmerrr

Program to print odd numbers from 1 to n using for loop.
--------------------------------
Program:
#include <stdio.h>
int main() {
int i,n;
printf("Enter the value of n:");
scanf("%d",&n);
for(i=1; i<=n; i+=2)
{
printf("%d \n", i);
}
return 0;
}
--------------------------------
#for_loop

@c_programmerrr

Program to add numbers from 1 to n using for loop.
---------------------------------
Program:
#include <stdio.h>
int main() {
int i,n,sum=0;
printf("Enter the value of n:");
scanf("%d",&n);
for(i=1; i<=n; i++)
{
printf("%d +%d =",sum,i);
sum=sum+i;
printf("%d\n",sum);
}
return 0;
}
-------------------------------
#for_loop

Program to add even numbers from 1 to n using for loop.
-----------------------------------
#include <stdio.h>
int main() {
int i,n,sum=0;
printf("Enter the value of n:");
scanf("%d",&n);
for(i=0; i<=n; i+=2)
{
printf("%d +%d =",sum,i);
sum=sum+i;
printf("%d\n",sum);
}
return 0;
}
-------------------------------------
#for_loop

Program to add odd numbers from 1 to n using for loop.
-------------------------------
#include <stdio.h>
int main() {
int i,n,sum=0;
printf("Enter the value of n:");
scanf("%d",&n);
for(i=1; i<=n; i+=2)
{
printf("%d +%d =",sum,i);
sum=sum+i;
printf("%d\n",sum);
}
return 0;
}
------------------------------------
#for_loop

Program to print Multiplication Table.
------------------------------
#include <stdio.h>

int main() {
int n;
printf("Enter a number: ");
scanf("%d", &n);
for(int i = 1; i <= 10; i++) {
printf("%d x %d = %d\n", n, i, n*i);
}
return 0;
}
-----------------------------
#for_loop

Program to find the factorial of a number.
-----------------------------------
#include <stdio.h>

int main()
{
int i, num, fact=1;
printf("Enter a number: ");
scanf("%d", &num);
for(i=num; i>=1; i--)
{
fact *= i;
}
printf("Factorial of %d is: %d", num, fact);
return 0;
}
-------------------------------------
#for_loop

Program to generate Fibonacci series.
-----------------------------
#include <stdio.h>
int main()
{
int n, i, t1 = 0, t2 = 1, nextTerm;
printf("Enter the number of terms: ");
scanf("%d", &n);
printf("Fibonacci Series: ");
for (i = 1; i <= n; ++i)
{
printf("%d, ", t1);
nextTerm = t1 + t2;
t1 = t2;
t2 = nextTerm;
}
return 0;
}
---------------------------------
#for_loop