// 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
}
#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;
}ath = ATH
smartBOY = yobTRAMS2
ath
smartBOY
Case #1: HTA
Case #2: yobTRAMS#include<stdio.h>
void revAString(char strg[])
{
int g, numb;
int tmpry = 0;
for(numb=0; strg[numb] != 0; numb++);
for(g = 0; g <numb/2; g++)
{
tmpry = strg[g];
strg[g]=strg[numb - 1 - g];
strg[numb - 1 - g] = tmpry;
}
for(g = 0; g < numb; g++)
putchar(strg[g]);
printf(" \n ");
}
int main(void)
{
char strg[60];
printf("Please insert the string you wish to get reversed: ");
scanf("%s", strg);
revAString(strg);
return 0;
}smartBOY