how to reverse a string in c

1#include <iostream>
2using namespace std;
3int main()
4{
5    char str[] = "Reverseme";
6    char reverse[50];
7    int i=-1;
8    int j=0;
9         /*Count the length, until it each at the end of string.*/ 
10          while(str[++i]!='\0');
11           while(i>=0)
12                    reverse[j++]=str[--i];
13            reverse[j]='\0';
14      cout<<"Reverse of  a string is"<< reverse;
15      return 0;
16}

1#include <stdio.h>
2int main() {
3    int n, rev = 0, remainder;
4    printf("Enter an integer: ");
5    scanf("%d", &n);
6    while (n != 0) {
7        remainder = n % 10;
8        rev = rev * 10 + remainder;
9        n /= 10;
10    }
11    printf("Reversed number = %d", rev);
12    return 0;
13}

1#include <stdio.h>
2int main() {
3    int n, rev = 0, remainder;
4    printf("Enter an integer: ");
5    scanf("%d", &n);
6    while (n != 0) {
7        remainder = n % 10;
8        rev = rev * 10 + remainder;
9        n /= 10;
10    }
11    printf("Reversed number = %d", rev);
12    return 0;
13}
14
15

1
2#include <stdio.h>
3#include <string.h>
4
5int main()
6{
7    char str[2][100];
8    printf("Type Text: ");
9
10    scanf("%[^\n]%*c", str[0]);
11    int length = strlen(str[0]);
12    int i, j;
13    for (i = 0, j = length - 1; i < length; i++, j--)
14    {
15        str[1][i] = str[0][j];
16    }
17    printf("Original Word: %s\n", str[0]);
18    printf("Reverse word: %s\n", str[1]);
19    return 0;
20}