Thread: CommandsProj2.Dat

C Ch [Character Case Change ]
Change character Ch to uppercase and print it outc Ch [Character Case Change]
Change character Ch to lowercase and print it out
P i k [Print k-th Digit ]
Print out the k-th digit of integer i
R x i [Round Reals ]
Round double value x to i significant decimal places
S x [Separate ]
Separate out the sign, integer part and fractional part of double value x
D i x [Partition Integer ]
Given integers i and x, print out two integers j and k, where the sum of j and
k equals i, and when you take x% of i and truncate it you get j
H [Help ]
Print a short synopsis of all the available commands
Q [Quit ] Quit

Originally Posted by Salem

And your question is ?

Exactly my response lol but how to do this i dont understand it... This program suppose to scan a text file and reads the file then prints the answer accordingly

text file (.DAT)

DA
H
+ 3 5
- 10 5
* 8 9
/ 92 3
c A
C b
P 56234 3
R 3.14195 4
S -51.235
D 50 10
Q

Do you know how to open a file for reading? If not, read up on it and practice writing code that opens a file. (Be sure to check that the file opens successfully.)

Do you know how to read from an opened file? If not, read up on it and practice writing code that reads from a text file. (Check by printing out what you've read from the file.)

Do you know how to parse data from a string? If not, figure out how to check the contents of a string so you can process it as needed.

Originally Posted by Matticus

Do you know how to open a file for reading? If not, read up on it and practice writing code that opens a file. (Be sure to check that the file opens successfully.)

Do you know how to read from an opened file? If not, read up on it and practice writing code that reads from a text file. (Check by printing out what you've read from the file.)

Do you know how to parse data from a string? If not, figure out how to check the contents of a string so you can process it as needed.

I could do this part but the rest I dont know like rounding and partitioning etc...

Code:

#include <stdlib.h>
#include <stdio.h>
#define LINE_MAXLENGTH 80




int main()
{
    float a, b;
    char operations;


    FILE* cmd = fopen("CommandsProj1.dat", "r");




    if (cmd == NULL)
    {
        printf("Error Code (404)");
        return EXIT_FAILURE;
    }


    int line[LINE_MAXLENGTH + 1];
    while (fgets(line, LINE_MAXLENGTH + 1, cmd))
    {
        float result;
        line[strcspn(line, "\n")] = '\0';
        if (strcmp(line, "DA") == 0)
        {


        }
        else if (strcmp(line, "Q") == 0)
        {




        }
        else if (strcmp(line, "H") == 0)
        {
            printf("Help Bar +, -, *, /, H, Q\n");
            continue;
        }


        else if (sscanf(line, "%c %f %f", &operations, &a, &b) == 3)
        {
            switch (operations)
            {
            case '+':
                result = a + b;
                break;
            case '-':
                result = a - b;
                break;
            case '*':
                result = a * b;
                break;
            case '/':
                result = a / b;
                break;
            default:
                continue;
            }
        printf("%c Operator: %.1f %c %.1f = %.1f \n", operations, a, operations, b, result);
    }
}
    return EXIT_SUCCESS;
}