## C Program to Add Two Integers

Code:

```#include <stdio.h>
int main()
{
int a = 10;
int b = 20;
int c ;
c = a + b;
printf("Sum of a and b is %d\n", c );
return 0;
}```

Output:

`Sum of a and b is 30`

## C Program to Multiply Two Floating-Point Numbers

Code:

```#include <stdio.h>
int main()
{
float a = 10.5, b = 1.5;
float c ;
c = a * b;
printf("Product of a and b is %.2f\n", c);
return 0;
}```

Output:

`Product of a and b is 15.75`

## C Program to Compute Quotient and Remainder

Code:

```#include <stdio.h>
int main()
{
int Div, Divr, Quot, Rem;
printf("Enter first value: ");
scanf("%d", &Div);
printf("Enter second value: ");
scanf("%d", &Divr);
Quot = Div / Divr;
Rem = Div % Divr;
printf("Quotient is %d\n", Quot);
printf("Remainder is %d", Rem);
return 0;
}```

Output:

```Enter first value: 48
Enter second value: 7
Quotient is 6
Remainder is 6```

## C Program to Find the Largest Number Among Three Numbers

Code:

```#include <stdio.h>
int main()
{
int a, b, c;
printf("Enter first number: ");
scanf("%d", &a);
printf("Enter second number: ");
scanf("%d", &b);
printf("Enter third number: ");
scanf("%d", &c);
if (a >= b && a >= c)
{
printf("Largest number is %d.", a);
}
if (b >= a && b >= c)
{
printf("Largest number is %d.", b);
}
if (c >= a && c >= b)
{
printf("Largest number is %d.", c);
}
return 0;
}```

Output:

```Enter first number: 8
Enter second number: 12
Enter third number: 5
Largest number is 12```