Thread: program cannot compute decimal point?

i want to average get the average of 3 grades.
formula grade1+grade2+grade3/300*50+50
for example 90+90+90/300 = 0.9 * 50 + 50 = 95 (calculator)
but when the program divides i get total/300 = 0.0000 *50x50 = 50.00000 instead of 95

Code:

#include<stdio.h>                 //important since printf#include<conio.h>
main()                                                                                      
{
    clrscr();
    int Grade1,Grade2,Grade3,total;
    float result,average;
    printf("\nInput Grade1 out of 100:");
    scanf("%d",&Grade1);
    printf("\nInput Grade2 out of 100:");
    scanf("%d",&Grade2);
    printf("\nInput Grade3 out of 100:");
    scanf("%d",&Grade3);
    total = Grade1+Grade2+Grade3;
    printf("\nYour total grade is:""%d",total);
    average = total/300;
    printf("average is ""%f",average);
    result = average*50+50;
    printf("\nResult:""%f",result);
    getch();
}

They're not needed, but they're perfectly valid. It is using what is known as compile-time string concatenation. The consecutive double quotes will both be omitted from the output.
It's useful in a circumstance such as:

Code:

string board =
    " | | \n"
    "-+-+-\n"
    " | | \n"
    "-+-+-\n"
    " | | \n";

This allows you to see how the multi-line text will appear at runtime, without resorting to run-time concatenation which is less efficient, e.g.:

Code:

string board;
board += " | | \n";
board += "-+-+-\n";
board += " | | \n";
board += "-+-+-\n";
board += " | | \n";

Or writing it as one long string which is less readable e.g.:

Code:

string board = " | | \n-+-+-\n | | \n-+-+-\n | | \n";