Question

Write in C Language

Write all these code in one program and upload.

Consider this array

char address1 [ ] = "12330 Washington Blvd, suite 300, Sacramento, CA 94560-2341" ;

(NOTE: The constant string on the RHS gets copied into the array address1 on the LHS)

1. Write a piece of code to count only letters in the string address1 using the function isAlpha  

2. Convert to all Upper Case

Write a program to convert address1 to all uppercase letters using toupper function

3. Write a program to count only the digists in the address1 array.

4. Declare

char address2 [ 100 ];  

Copy only letters and digits (use isalnum function) from Address1 to address2 .

Answer 1

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

int main(void) {
        char address1 [ ] = "12330 Washington Blvd, suite 300, Sacramento, CA 94560-2341" ;

        int numLetters = 0;
        int i = 0;
        while(address1[i]) {
                if(isalpha(address1[i])) {
                        numLetters++;
                }
                i++;
        }
        printf("Total number of alphabets: %d\n", numLetters);

        //convert to all uppercase.
        i = 0;
        while(address1[i]) {
                if(isalpha(address1[i])) {
                        address1[i] = toupper(address1[i]);
                }
                i++;
        }
        printf("After converting to uppercase: %s\n", address1);

        int numDigits = 0;
        i = 0;
        while(address1[i]) {
                if(isdigit(address1[i])) {
                        numDigits++;
                }
                i++;
        }
        printf("Total number of digits: %d\n", numDigits);

        char address2 [ 100 ]; 
        i = 0;
        int j = 0;
        while(address1[i]) {
                if(isalnum(address1[i]))
                        address2[j++] = address1[i];
                i++;
        }
        address2[j] = '\0';


        printf("Address2: %s\n", address2);
        return 0;
}

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