Question

Write a C function that receives a character array (string), and it will check the characters of the array to figure out whether the string has a given valid pattern. The required pattern will be given to you. In this function, for instance, you should check if the ascii code of an element of the character array is between a range. The ascii table of all the printable characters will be provided to you. See the last page of this guideline. [

Answer 1

So, basically we have given a string and a range of ascii values and we have to check to given string's characters are in the given range.

If they are within the range, the pattern is valid otherwise the pattern is considered as invalid.

Code :

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

//this is our function declaration
bool checkPattern(char[], int, int);

int main()
{
// initializing the character array of string
char string[] = {'h','i','i','c','h','e','g','g'};
  
//setting the range of ascii values
int start = 65;
int end = 122;
  
//enter into if and only if function return true
if(checkPattern(string, start, end))
{
printf("You have entered a valid pattern");
}
else
{
printf("You have entered an invalid pattern");
}

return 0;
}

//body of our function
bool checkPattern(char string[], int start, int end)
{
int n = strlen(string);
for(int i=0; i<n; i++)
{
if( string[i] < start || string[i] > end)
{
return false;
}

}

return true;
}

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Screenshots of Code and output :

Here is the output:

just change the any char in the array to a number and you will get a output like this

it's because we have set the range from 65 to 122, any char between this range is considered as a valid character