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

0 vote352 views1 answer
C ausgabe von variablen
C
0 vote377 views1 answer
Tetris rotate shape
C
1 vote369 views1 answer
How to print the address of a pointer in c
C
1 vote436 views3 answers
Strcpy c
C
0 vote394 views2 answers
Les fichiers en c
C
4 votes311 views2 answers
Remove character from string c
C
-1 vote386 views1 answer
C find last element in array
C
0 vote383 views1 answer
Grep C hello world
C
0 vote384 views1 answer
Keep last n bits
C
1 vote348 views1 answer
Parcourire tableau c
C