C / C++ / MFC

18-Jul-24 20:36

Prepare the following strings in advance as an array. Be sure to write everything in full-width characters.
"The difference between being 18 and 81. 18 years old is the one who drowns in love, 81 years old is the one who drowns in the bath. 18 years old is the one who runs down the road, and vice versa.
The person running is 81 years old. An 18-year-old has a fragile heart, and an 81-year-old has a fragile bone. I'm 18 years old and my heart can't stop pounding.
He is 81 years old and can't stop the plane. An 18-year-old can choke on love, and an 81-year-old can choke on rice cakes. I'm concerned about the deviation value
I am 18 years old, and I am 81 years old and concerned about my blood pressure and blood sugar levels. An 18-year-old who doesn't know anything yet, an 81-year-old who doesn't remember anything anymore.
An 18-year-old who is looking for himself, and an 81-year-old who is looking for everyone else. "
- Then have the user enter a search string. Search characters can be up to 10 characters.
・Then, have the user enter a replacement string. Replacement characters can be up to 10 characters.
- Perform a prefix match search on the above string and replace all hit strings.
- After replacing, output the result to the screen. If there are no conversion candidates, "Nothing to convert" is displayed.(if the searched string is in more than 1 place on the original string, the replacement will replace all of it)

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OriginalGriff18-Jul-24 20:37

18-Jul-24 20:37

While we are more than willing to help those that are stuck, that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us to do it all for you.

So we need you to do the work, and we will help you when you get stuck. That doesn't mean we will give you a step by step solution you can hand in!
Start by explaining where you are at the moment, and what the next step in the process is. Then tell us what you have tried to get that next step working, and what happened when you did.

Just doing a copy'n'paste of your assignment will get you nowhere.

If you are having problems getting started at all, then this may help: How to Write Code to Solve a Problem, A Beginner's Guide[^]

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Member 1631107418-Jul-24 20:50

18-Jul-24 20:50

thanks,I got to the point of searching input and limiting it to 10 characters but I dont know how to replace that searched words.

modified 19-Jul-24 2:59am.

OriginalGriff18-Jul-24 20:59

18-Jul-24 20:59

And? What have you tried?

Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.

Member 1631107418-Jul-24 21:23

18-Jul-24 21:23

#include <stdio.h>
#include <string.h>

#define MAX_STRINGS 3
#define MAX_LENGTH 512

// Function to perform search and replace
void searchAndReplace(char text[][MAX_LENGTH], int numStrings, const char* searchStr, const char* replaceStr) {
    int replaced = 0;

    for (int i = 0; i < numStrings; ++i) {
        char buffer[MAX_LENGTH];
        char* pos;
        size_t searchLen = strlen(searchStr);
        size_t replaceLen = strlen(replaceStr);

        // Copy original string to buffer
        strcpy_s(buffer, text[i]);

        // Perform the replacement
        while ((pos = strstr(buffer, searchStr)) != NULL) {
            // Print the original string before replacement
            if (!replaced) {
                printf("%s\n", text[i]);
                replaced = 1;
            }

            // Perform the replacement
            size_t len = strlen(pos + searchLen);
            memmove(pos + replaceLen, pos + searchLen, len + 1);
            memcpy(pos, replaceStr, replaceLen);
        }

        // Print the modified string if it was replaced
        if (replaced) {
            printf("%s\n", buffer);
            replaced = 0; // Reset for the next string
        }
    }
}

int main() {
    // Prepare the strings in full-width characters
    char strings[MAX_STRINGS][MAX_LENGTH] = {
        "１８歳と８１歳の違い。１８歳は恋に溺れる人で、８１歳はお風呂に溺れる人。１８歳は道を走り、逆もまた然り。８１歳の人が走っている。１８歳は心がもろく、８１歳は骨がもろい。私は１８歳で心臓が止まらない。",
        "８１歳の彼は飛行機を止められない。１８歳は恋に窒息することができ、８１歳は餅に窒息することができる。偏差値が気になる。私は１８歳で、８１歳で血圧と血糖値を気にしている。まだ何も知らない１８歳、もう何も覚えていない８１歳。",
        "自分を探している１８歳と、みんなを探している８１歳。"
    };

    // Display the original strings
    printf("Original strings:\n");
    for (int i = 0; i < MAX_STRINGS; ++i) {
        printf("%s\n", strings[i]);
    }

    // Input search and replacement strings
    char searchStr[11], replaceStr[11];
    printf("Enter search string (up to 10 characters): ");
    fgets(searchStr, sizeof(searchStr), stdin);
    searchStr[strcspn(searchStr, "\n")] = '\0'; // Remove newline character
    printf("Enter replacement string (up to 10 characters): ");
    fgets(replaceStr, sizeof(replaceStr), stdin);
    replaceStr[strcspn(replaceStr, "\n")] = '\0'; // Remove newline character

    // Ensure searchStr and replaceStr are within the allowed length
    if (strlen(searchStr) > 10 || strlen(replaceStr) > 10) {
        fprintf(stderr, "Search and replacement strings must be up to 10 characters long.\n");
        return 1;
    }

    // Process and replace
    int found = 0;
    for (int i = 0; i < MAX_STRINGS; ++i) {
        if (strstr(strings[i], searchStr) != NULL) {
            found = 1;
            searchAndReplace(strings, MAX_STRINGS, searchStr, replaceStr);
        }
    }

    // Output message if nothing was changed
    if (!found) {
        printf("Nothing is changed.\n");
    }

    return 0;
}

this is best one I tried and it does not replace the words on the original string.

[edit]
OriginalGriff: code block added
[/edit]

modified 19-Jul-24 3:37am.

OriginalGriff18-Jul-24 21:38

18-Jul-24 21:38

Why not? What did the debugger show you was happening?

Member 1631107418-Jul-24 21:48

18-Jul-24 21:48

the debugger let me input my search string and not letting me enter my replacement string. I made it so that 10 letters can be enter into it but it stop working when I put letters over 3. Are there any chance the program is mistaking one japanese word into 3 letters?

OriginalGriff19-Jul-24 1:17

19-Jul-24 1:17

Assuming that your Japanese is in Unicode (Hiragana / Katakana) then it'll usually be 2 bytes per character, but it is possible to use three byte Unicode (since the possible range is 21 bits, meaning 3 bytes)

What exactly do you mean "not letting me enter my replacement string." I'm pretty sure it didn't try to smack your wrist and tell you off but what exactly did happen? How did you check?

OriginalGriff19-Jul-24 1:21

19-Jul-24 1:21

char on it's own is 1 byte - for Unicode you probably need to use the uchar.h header and its' types, but I've never needed them so I can't help you that much. You might want to check your course notes and Google before going any further.

David Crow19-Jul-24 4:56

David Crow

19-Jul-24 4:56

Member 16311074 wrote:
...not letting me enter my replacement string.

Try changing the size of searchStr and replaceStr to something too large (but still only enter 10 characters). When you make them just large enough and you enter in that many characters, fgets() leaves the \n in the keyboard buffer and the second call to fgets() see it and exits right away.

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RedDk19-Jul-24 7:16

RedDk

19-Jul-24 7:16

First run:
~~~~~~~~~~~~~~~~
Original strings:
∩╝æ∩╝ÿµ¡│πü¿∩╝ÿ∩╝æµ¡│πü«ΘüòπüäπÇé∩╝æ∩╝ÿµ¡│πü»µüïπü½µ║║πéîπéïΣ║║πüºπÇü∩╝ÿ∩╝æµ¡│πü»πüèΘó¿σæéπü½µ║║πéîπéïΣ║║πÇé∩╝æ∩╝ÿµ¡│πü»ΘüôπéÆΦ╡░πéèπÇüΘÇåπééπü╛πüƒτä╢πéèπÇé∩╝ÿ∩╝æµ¡│πü«Σ║║πüîΦ╡░πüúπüªπüäπéïπÇé∩╝æ∩╝ÿµ¡│πü»σ┐âπüîπééπéìπüÅπÇü∩╝ÿ∩╝æµ¡│πü»Θ¬¿πüîπééπéìπüäπÇéτºüπü»∩╝æ∩╝ÿµ¡│πüºσ┐âΦçôπüîµ¡óπü╛πéëπü¬πüäπÇé
∩╝ÿ∩╝æµ¡│πü«σ╜╝πü»Θú¢Φíîµ⌐ƒπéÆµ¡óπéüπéëπéîπü¬πüäπÇé∩╝æ∩╝ÿµ¡│πü»µüïπü½τ¬Æµü»πüÖπéïπüôπü¿πüîπüºπüìπÇü∩╝ÿ∩╝æµ¡│πü»Θñàπü½τ¬Æµü»πüÖπéïπüôπü¿πüîπüºπüìπéïπÇéσüÅσ╖«σÇñπüîµ░ùπü½πü¬πéïπÇéτºüπü»∩╝æ∩╝ÿµ¡│πüºπÇü∩╝ÿ∩╝æµ¡│πüºΦíÇσ£ºπü¿ΦíÇτ│ûσÇñπéÆµ░ùπü½πüùπüªπüäπéïπÇéπü╛πüáΣ╜òπééτƒÑπéëπü¬πüä∩╝æ∩╝ÿµ¡│πÇüπééπüåΣ╜òπééΦªÜπüêπüªπüäπü¬πüä∩╝ÿ∩╝æµ¡│πÇé
Φç¬σêåπéÆµÄóπüùπüªπüäπéï∩╝æ∩╝ÿµ¡│πü¿πÇüπü┐πéôπü¬πéÆµÄóπüùπüªπüäπéï∩╝ÿ∩╝æµ¡│πÇé
Enter search string (up to 10 characters): 2
Enter replacement string (up to 10 characters): #
Nothing is changed.

Second run:
~~~~~~~~~~~
Original strings:
∩╝æ∩╝ÿµ¡│πü¿∩╝ÿ∩╝æµ¡│πü«ΘüòπüäπÇé∩╝æ∩╝ÿµ¡│πü»µüïπü½µ║║πéîπéïΣ║║πüºπÇü∩╝ÿ∩╝æµ¡│πü»πüèΘó¿σæéπü½µ║║πéîπéïΣ║║πÇé∩╝æ∩╝ÿµ¡│πü»ΘüôπéÆΦ╡░πéèπÇüΘÇåπééπü╛πüƒτä╢πéèπÇé∩╝ÿ∩╝æµ¡│πü«Σ║║πüîΦ╡░πüúπüªπüäπéïπÇé∩╝æ∩╝ÿµ¡│πü»σ┐âπüîπééπéìπüÅπÇü∩╝ÿ∩╝æµ¡│πü»Θ¬¿πüîπééπéìπüäπÇéτºüπü»∩╝æ∩╝ÿµ¡│πüºσ┐âΦçôπüîµ¡óπü╛πéëπü¬πüäπÇé
∩╝ÿ∩╝æµ¡│πü«σ╜╝πü»Θú¢Φíîµ⌐ƒπéÆµ¡óπéüπéëπéîπü¬πüäπÇé∩╝æ∩╝ÿµ¡│πü»µüïπü½τ¬Æµü»πüÖπéïπüôπü¿πüîπüºπüìπÇü∩╝ÿ∩╝æµ¡│πü»Θñàπü½τ¬Æµü»πüÖπéïπüôπü¿πüîπüºπüìπéïπÇéσüÅσ╖«σÇñπüîµ░ùπü½πü¬πéïπÇéτºüπü»∩╝æ∩╝ÿµ¡│πüºπÇü∩╝ÿ∩╝æµ¡│πüºΦíÇσ£ºπü¿ΦíÇτ│ûσÇñπéÆµ░ùπü½πüùπüªπüäπéïπÇéπü╛πüáΣ╜òπééτƒÑπéëπü¬πüä∩╝æ∩╝ÿµ¡│πÇüπééπüåΣ╜òπééΦªÜπüêπüªπüäπü¬πüä∩╝ÿ∩╝æµ¡│πÇé
Φç¬σêåπéÆµÄóπüùπüªπüäπéï∩╝æ∩╝ÿµ¡│πü¿πÇüπü┐πéôπü¬πéÆµÄóπüùπüªπüäπéï∩╝ÿ∩╝æµ¡│πÇé
Enter search string (up to 10 characters): πéèπ
Enter replacement string (up to 10 characters): ----
∩╝æ∩╝ÿµ¡│πü¿∩╝ÿ∩╝æµ¡│πü«ΘüòπüäπÇé∩╝æ∩╝ÿµ¡│πü»µüïπü½µ║║πéîπéïΣ║║πüºπÇü∩╝ÿ∩╝æµ¡│πü»πüèΘó¿σæéπü½µ║║πéîπéïΣ║║πÇé∩╝æ∩╝ÿµ¡│πü»ΘüôπéÆΦ╡░πéèπÇüΘÇåπééπü╛πüƒτä╢πéèπÇé∩╝ÿ∩╝æµ¡│πü«Σ║║πüîΦ╡░πüúπüªπüäπéïπÇé∩╝æ∩╝ÿµ¡│πü»σ┐âπüîπééπéìπüÅπÇü∩╝ÿ∩╝æµ¡│πü»Θ¬¿πüîπééπéìπüäπÇéτºüπü»∩╝æ∩╝ÿµ¡│πüºσ┐âΦçôπüîµ¡óπü╛πéëπü¬πüäπÇé
∩╝æ∩╝ÿµ¡│πü¿∩╝ÿ∩╝æµ¡│πü«ΘüòπüäπÇé∩╝æ∩╝ÿµ¡│πü»µüïπü½µ║║πéîπéïΣ║║πüºπÇü∩╝ÿ∩╝æµ¡│πü»πüèΘó¿σæéπü½µ║║πéîπéïΣ║║πÇé∩╝æ∩╝ÿµ¡│πü»ΘüôπéÆΦ╡░----ÇüΘÇåπééπü╛πüƒτä╢----Çé∩╝ÿ∩╝æµ¡│πü«Σ║║πüîΦ╡░πüúπüªπüäπéïπÇé∩╝æ∩╝ÿµ¡│πü»σ┐âπüîπééπéìπüÅπÇü∩╝ÿ∩╝æµ¡│πü»Θ¬¿πüîπééπéìπüäπÇéτºüπü»∩╝æ∩╝ÿµ¡│πüºσ┐âΦçôπüîµ¡óπü╛πéëπü¬πüäπÇé

Seems to be running as expected here.