How to reverse a string in c

Reverse a number in c

#include <stdio.h>
int main() {
    int n, rev = 0, remainder;
    printf("Enter an integer: ");
    scanf("%d", &n);
    while (n != 0) {
        remainder = n % 10;
        rev = rev * 10 + remainder;
        n /= 10;
    }
    printf("Reversed number = %d", rev);
    return 0;
}

How to reverse a string in c

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

int main()
{
    char str[2][100];
    printf("Type Text: ");

    scanf("%[^\n]%*c", str[0]);
    int length = strlen(str[0]);
    int i, j;
    for (i = 0, j = length - 1; i < length; i++, j--)
    {
        str[1][i] = str[0][j];
    }
    printf("Original Word: %s\n", str[0]);
    printf("Reverse word: %s\n", str[1]);
    return 0;
}

Reverse string in c

// Reverse a string using pointers:

#include <stdio.h>

void rev(char *str)
{
	char *r_ptr = str;
	while (*(r_ptr + 1) != '\0')
		r_ptr++;

	while (r_ptr > str)
	{
		char tmp = *r_ptr;
		*r_ptr-- = *str;
		*str++ = tmp;
	}
}

void main()
{
	char s[] = "Hello World!";
	rev(s);
	puts(s); // Prints !dlroW olleH
}

Similar codes

2 votes140 views1 answer
Animated sprite from few images pygame
C
2 votes143 views10 answers
Lol
C
4 votes148 views1 answer
Why is it called c
C
0 vote138 views1 answer
Pygraphviz show
C
1 vote159 views1 answer
Java.lang.SecurityException: Permission denied (missing INTERNET permission?)
C
0 vote135 views1 answer
What is c
C
3 votes137 views3 answers
Regex in rails
C
0 vote157 views1 answer
Function for quicksort in c
C
0 vote147 views1 answer
Python adding calculator
C
0 vote140 views1 answer
Vbl share price
C