Basics
Hello world program
#include < stdio.h >
int main() {
// printf() displays the string inside “”
printf(“Hello, World!”);
return 0;
}
Output : Hello, World!
Printf () Example
#include < stdio.h >
int main()
{
// Displays the string
printf(“C Programming”);
return 0;
}
Output // C Programming
Print An Integer
#include < stdio.h >
int main() {
int number;
printf(“Enter an integer:\n “);
// reads and stores input
scanf(“%d”, &number);
// displays output
printf(“You entered: %d”, number);
return 0;
}
Output // Enter an integer :
You entered : 55
Simple Addition
#include < stdio.h >
int main() {
int number1, number2, sum;
printf(“Enter two integers: “);
scanf(“%d %d”, &number1, &number2);
// calculating sum
sum = number1 + number2;
printf(“%d + %d = %d”, number1, number2, sum);
return 0;
}
Output
Enter two integers: 12
11
12 + 11 = 23
Subtraction between Two Numbers
#include < stdio.h >
int main() {
int number1, number2, sum;
printf(“Enter two integers: “);
scanf(“%d %d”, &number1, &number2);
// calculating sub
sub = number1 – number2;
printf(“%d – %d = %d”, number1, number2, sub);
return 0;
}
Output
Enter two integers: 12
11
12 – 11 = 1
Multiplication between Two numbers
#include < stdio.h >
int main() {
int number1, number2, sum;
printf(“Enter two integers: “);
scanf(“%d %d”, &number1, &number2);
// calculating multiple
multiple = number1 * number2;
printf(“%d * %d = %d”, number1, number2, multiple);
return 0;
}
Output
Enter two integers: 6
2
6 * 2 = 12
Division between Two numbers
#include < stdio.h >
int main() {
int number1, number2, sum;
printf(“Enter two integers: “);
scanf(“%d %d”, &number1, &number2);
// calculating division
division= number1 / number2;
printf(“%d / %d = %d”, number1, number2, division);
return 0;
}
Output
Enter two integers: 12
6
12 / 6 = 2
Modules operation in c
#include < stdio.h >
int main() {
int a,b,c;
printf(“Enter your Number: \n”);
scanf(“%d”,&a);
printf(“Enter your 2 Number: \n”);
scanf(“%d”,&b);
c = a% b;
printf(“modulus of %d And %d = %d \n”,a,b,c);
return 0;
}
output // Enter your Number:
11
Enter your 2 Number:
3
modulus of 11 And 3 = 2
[Program finished]
Volume of Cube
// Find volume of cube
#include<< stdio.h >
#include<< conio.h >
{
int l,b,h,v;
clrscr();
printf(“enter the value of l:\n”);
scanf(“%d”,&l);
printf(“enter the value of b:\n”);
scanf(“%d”,&b);
printf(“enter the value of h:\n”);
scanf(“%d”,&h);
v=l*b*h;
printf(“Volume Of Cube::%d”,v);
getch();
}
Output:
enter the value of l:
10
enter the value of b:
10
enter the value of h:
10
volume of Cube:1000
Convert celcius to fernhite
#include
int main() {
float celsius, fahrenheit;
printf(“Enter temp in Celsius : “);
scanf(“%f”, &celsius);
fahrenheit = (1.8 * celsius) + 32;
printf(“\nTemperature in Fahrenheit : %f “, fahrenheit);
return (0);
}
.
Output //
Enter temp in Celsius : 55
Temperature in Fahrenheit : 131.000000
[Program finished]
Find square root
// find square root of number example
#include < stdio.h >
int main(){
int num;
scanf(“%d”,&num);
printf(“Square root: %f”,sqrt(num));
return 0;
}
Output //
25
Square root: 5.000000
[Program finished]
Convert km to cm to mm
// K.M. to meter, centimeter or mm
#include < stdio.h >
int main()
{
float km;
int v;
float ans;
printf(“Enter distance in K.M. : “);
scanf(“%f”,&km);
printf(“1 for meter 2 for centimeter 3 for mm : “);
fflush(stdin);
scanf(“%d”,&v);
if(v==1)
{
ans=km*1000;
}
if(v==2)
{
ans=km*100000;
}
if(v==3)
{
ans=km*1000000;
}
printf(“Answer : %.2f”,ans);
return 0;
}
Output 1 example
Enter distance in K.M. : 10
1 for meter 2 for centimeter 3 for mm : 3
Answer : 10000000.00
[Program finished]
Output 2
Enter distance in K.M. : 10
1 for meter 2 for centimeter 3 for mm : 1
Answer : 10000.00
[Program finished]
Output 3
Enter distance in K.M. : 10
1 for meter 2 for centimeter 3 for mm : 2
Answer : 1000000.00
[Program finished]
HYTEK 