C Exercises: Copy a given string into another and count the number of characters copied

Last update on September 18 2025 12:35:27 (UTC/GMT +8 hours)

Copy a string into another and count its characters

Write a C program to copy a given string into another and count the number of characters copied.

Pictorial Presentation:

Sample Solution:

C Code:

#include<stdio.h>
#define N 10

int main() {
    char str1[80], str2[80];
    int i;

    // Prompt for user input
    printf("Input a string: ");
    scanf("%s", str2);

    // Copy characters from str2 to str1
    for(i=0; str2[i]!='\0'; i++)
        str1[i]=str2[i];
    str1[i]='\0';

    // Output results
    printf("\n");
    printf("Original string: %s", str1);
    printf("\nNumber of characters = %d\n", i);

    return 0;
}

Sample Output:

Input a string
Original string: w3resource
Number of characters = 10

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C program to copy a string without using strcpy and count its characters using pointer arithmetic.
• Write a C program to duplicate a string in reverse order and count the characters copied.
• Write a C program to copy a string and convert all lowercase letters to uppercase while counting the characters.
• Write a C program to copy a string and simultaneously count the occurrences of a specified character.

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