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amina42
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Asked: 2022-05-05T05:34:06+00:00 In:

Set hasDigit to true if the 3-character passCode contains a digit?

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How to set hasdigit to true if the 3-character passcode contains a digit. Below is my code

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

int main(void) {
bool hasDigit;
char passCode[50];

hasDigit = false;
strcpy(passCode, "abc");

/* Your solution goes here */

if (hasDigit) {
printf("Has a digit.\n");
}
else {
printf("Has no digit.\n");
}

return 0;
}

Give me a few effective suggestions to set hasdigit to true if the 3-character passcode contains a digit.

passcodeset hasdigit to true
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3 Answers

  1. Best Answer

    You should add the following loop

    for (int i=0; passCode[i]; i++)
    if (isdigit(passCode[i]))
        hasDigit = true;

    Your code after rewritten is

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

int main(void) {
bool hasDigit;
char passCode[50];

hasDigit = false;
strcpy(passCode, "abc");

/* Add loop to set hasdigit to true if the 3-character passcode contains a digit*/
for (int i=0; passCode[i]; i++)
if (isdigit(passCode[i]))
hasDigit = true;

if (hasDigit) {
printf("Has a digit.\n");
}
else {
printf("Has no digit.\n");
}

return 0;
}
    • 22

  2. I have simple answer and it works for me

    if (isdigit(passCode.at(0)) || isdigit(passCode.at(1)) || isdigit(passCode.at(2)))
{
hasDigit = true;
}
    • 20

  3. Suggestion command could be solved to your problem

    bool hasDigit = false;
for (size_t i = 0; passCode[i]; ++i) {
if (isdigit((unsigned char)passCode[i])) {
hasDigit = true;
break;
}
}

    Be aware it is important to note that isdigit (and every function) does not always return 1 so comparing it with true is not correct. Simply check to see whether it returns zero or non-zero. That’s the value that isdigit is stated to return.

    You’ll apply a similar loop for the second one and then do:

    for (size_t i = 0; passCode[i]; ++i) {
if (isspace((unsigned char)passCode[i])) {
passCode[i] = '_';
}
}
    • 22

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