C Program to Find Profit and Loss

In this tutorial, we will learn about how to create a program in C that will ask from user to enter cost price and selling price of any item to calculate and print profit or loss on that item.

#include<stdio.h>
#include<conio.h>
int main()
{
    float sp, cp, pf, ls;
    printf("Enter cost price: ");
    scanf("%f", &cp);
    printf("Enter selling price: ");
    scanf("%f", &sp);
    if(sp>cp)
    {
        pf = sp-cp;
        printf("Profit = %.2f", pf);
    }
    else if(cp>sp)
    {
        ls = cp-sp;
        printf("Loss = %.2f", ls);
    }
    else
        printf("No profit and loss.");
    getch();
    return 0;
}

As the above program was written under Code::Blocks IDE, therefore after successful build and run, here is the snapshot of first sample run:

c program find profit loss

Now supply the value of cost and selling price say 1200 as cost price and 1450 as selling price and press ENTER key to see output, either in profit or in loss. As we have purchased the item in 1200 and sold it in 1450, therefore we have made profit of 250 on that item. Here is the second snapshot of the sample run:

print profit loss c program

Now let's run the program second time. If cost price is less than the selling price, then we will earn the money as profit, otherwise if cost price is greater than the selling price, then we have loose the money as loss. Here is the snapshot of the sample run, in this case there is a loss of some money:

c program profit loss selling cost price

Let's check the above program with another sample run, that what will happen if cost price and selling price becomes equal:

c program calculate profit loss

Program Explained

  • Receive value for cost price in any variable say cp
  • Receive value for selling price in any variable say sp
  • Use if-else statement to check whether sp is greater than, less than, or equal to cp
  • If it is greater than cp, it means we have made some profit:
    • Therefore the statement sp>cp evaluates to be true, and program flow goes inside the if block and sp-cp will be initialized to pf (holds profit value)
    • Print the value of pf (profit) as output. Here we have used the format specifier as %.2f to print the floating-point value upto its 2 decimal places only
    • For example, if user provide cost price as 1200 and selling price as 1450, then we have made profit of 250 which will be printed as output
  • And if it is less than cp, it means we have made some loss:
    • Therefore the statement cp>sp evaluates to be true, and program flow goes inside the else if block and cp-sp gets initialized to ls (holds loss value)
    • Print the value of ls (loss) as output
  • And if it is equal to cp, it means we have neither made profit nor made loss:
    • Therefore program flow goes inside else block and No profit and loss. gets printed

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