Write a C program to find reverse of a string using pointers
Question
Write a C program to find reverse of a string using pointers
Solution
Sure! Here's a step-by-step guide to writing a C program to find the reverse of a string using pointers:
Step 1: Include the necessary header files.
#include <stdio.h>
#include <string.h>
Step 2: Define the main function.
int main() {
// Your code goes here
return 0;
}
Step 3: Declare a character array to store the input string.
char str[100];
Step 4: Prompt the user to enter a string.
printf("Enter a string: ");
scanf("%s", str);
Step 5: Declare a pointer variable to point to the last character of the string.
char *ptr = str + strlen(str) - 1;
Step 6: Print the reverse of the string using the pointer.
printf("Reverse of the string: ");
while (ptr >= str) {
printf("%c", *ptr);
ptr--;
}
printf("\n");
Step 7: Complete the main function and run the program.
int main() {
char str[100];
printf("Enter a string: ");
scanf("%s", str);
char *ptr = str + strlen(str) - 1;
printf("Reverse of the string: ");
while (ptr >= str) {
printf("%c", *ptr);
ptr--;
}
printf("\n");
return 0;
}
That's it! This program will prompt the user to enter a string and then print its reverse using pointers.
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