A Program to Reverse String

In this example, we are giving a program to reverse a string without the strrev() function.

Program to to reverse a string:

  1. #include <stdio.h>
  2. int main() {
  3.   char str[1000], rev[1000];
  4.   int start, end, count = 0;
  5.   printf("Input a string: ");
  6.   gets(str);
  7.   // calculating string length
  8.   while(str[count] != '\0')
  9.     count++;
  10.   end = count - 1;
  11.   for(start=0; start<count; start++) {
  12.     rev[start] = str[end];
  13.     end--;
  14.   }
  15.   rev[start] = '\0';
  16.   printf("Reverse of the string: %s\n",rev);
  17.   return 0;
  18. }

Output:

Input a string: abc
Reverse of the string: cba

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