Problem: Addition, subtraction ,multiplication, and division of two numbers with user’s choice option by using C programming.
Solution:
Introduction:
In this problem, we solved a simple mathematical problem by using C programming. We found Addition, subtraction ,multiplication, and division of two numbers and give the user’s to chose his/her option here by using codeblocks.
Each instruction in a C program is written as a separate statement. C has no specific rules for the position at which a statement is to be written in a given line. That’s why it is often called a free- form language.
#include is a preprocessor directive. Then we used int main ( ) with a {}. We used it to start our programming We used printf ( ) to show data, information etc. on the screen. We used scanf for taking input from the user.
We used float here to take 6 varriables because float is used for both integer and point numbers. Here, A and B is two numbers which were inputed by user. C,D,E,F would be calculated as Addition, subtraction ,multiplication, and division of two numbers by using C programming.
We used integer for option because options are integer numbers.
Code:
#include<stdio.h> int main() {
float A,B,C,D,E,F ;
int x;
printf("Enter two numbers:"); scanf("%f %f",&A,&B);
printf("Enter your option:\n 1 for addition\n 2 for subtraction\n 3 for multiplication\n 4 for division"); scanf("%d",&x);
if (x==1){
C=A+B;
printf ("The addition=%.2f",C);} else if (x==2){
D=A-B;
printf("The subtraction=%.2f",D);} else if (x==3){
E=A*B;
printf("The multiplition=%.2f",E);} else if (x==4){
F=A/B;
printf("The division=%.2f",F);}
else {printf("your option is invalid :)");}
}
Output:
We successfully run the program by using codeblocks. Here, we took A=3 and B=4 and give the options of addition, subtraction ,multiplication and division as 1,2,3,4. The results of those operations were 7.00,-1.00,12.00, 0.75 seen on the display automatically and the result was absolutely correct. And if the user gave a invalid number, it showed invalidation of that option too. So, we could see that by using C programming we can calculate anything without any possibility of any kind of error.
Problem: Addition without using plus operator.
Introduction:
In this problem, we solved a simple mathematical problem by using C programming. We saw how
to add two numbers without using plus operator by using codeblocks.
Each instruction in a C program is written as a separate statement. C has no specific rules for the
position at which a statement is to be written in a given line. That’s why it is often called a freeform language.
#include is a preprocessor directive. Then we used int main ( ) with a {}. We used it to start our
programming We used printf ( ) to show data, information etc. on the screen. We used scanf for
taking input from the user.
Here, we used three varriables a,b,c. a and b were two numbers which we got from the users and
c was addition of two numbers .
Code:
#include<stdio.h>
int main() {
int a,b,c;
printf("Enter two numbers:");
scanf("%d %d",&a,&b);
c=a-~b-1;
printf("The addition is: %d”,&c);
}
Output:
Discussion:
We successfully run the program by using codeblocks. We took two numbers a=5 and b=2. The
answer was shown on the display automatically which was 7. So, we could see that by using C
programming we can add any two numbers easily without using plus operator. There is not any
possibility of any kind of error.
Problem: Addition without using plus operator.
Introduction:
In this problem, we solved a simple mathematical problem by using C programming. We saw how
to substract two numbers without using plus operator by using codeblocks.
Each instruction in a C program is written as a separate statement. C has no specific rules for the
position at which a statement is to be written in a given line. That’s why it is often called a freeform language.
#include is a preprocessor directive. Then we used int main ( ) with a {}. We used it to start our
programming We used printf ( ) to show data, information etc. on the screen. We used scanf for
taking input from the user.
Here, we used three varriables a,b,c. a and b were two numbers which we got from the users and
c was addition of two numbers .
Code:
#include<stdio.h>
int main() {
int a,b,c;
printf("Enter two numbers:");
scanf("%d %d",&a,&b);
c=a+~b+1;
printf("The addition is: %d”,&c);
}
Output:
Discussion:
We successfully run the program by using codeblocks.We took two numbers a=5 and b=2. The
answer was shown on the display automatically which was 3. So, we could see that by using C
programming we can substract any two numbers easily without using plus operator. There is not
any possibility of any kind of error.
Problem: Finding out the bigger number between two numbers.
Solution:
Introduction: In this problem, we found out a bigger number between two numbers through C
programming by using codeblocks. Each instruction in a C program is written as a separate
statement. C has no specific rules for the position at which a statement is to be written in a given
line. That’s why it is often called a free-form language. #include is a preprocessor directive. Then
we used int main ( ) with a {}. We used it to start our programming We used printf ( ) to show
data, information etc. on the screen. We used scanf for taking input from the user. We used int
here to take two variables. Here, m and r are two numbers which were given by user.
Code:
#include<stdio.h>
int main (){
int m,r;
printf("Enter the 1st number:");
scanf("%d",&m);
printf("Enter the 2nd number:");
scanf("%d",&r);
if (m>r){printf("the bigger number is %d",m);}
else if (r>m){printf("The bigger number is:%d",r);}
else if(m==r)
{ printf("The number is equal");}
}
Output:
Discussion:
We successfully run the program by using codeblocks. Here, we took m=56 and r=78
and the bigger number was 78 which was seen on the display automatically and the result was
absolutely correct. And if the user gave two equal numbers, it could show the equality too. So, we
could see that by using C programming we can calculate anything without any possibility of any
kind of error
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