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C Exercises: Print a string in reverse order

C For Loop: Exercise-57 with Solution

Write a program in C to print a string in reverse order.

Pictorial Presentation:

Print a string in reverse order

Sample Solution:

C Code:

#include <stdio.h>
#include <string.h>
 
void main()
{
   char str1[100], tmp;
   int l, lind, rind,i;

       printf("\n\nPrint a string in reverse order:\n ");
       printf("-------------------------------------\n");

   printf("Input a string to reverse : ");
   scanf("%s", str1);
   l = strlen(str1);

   lind = 0;
   rind = l-1;
    
for(i=lind;i<rind;i++)
       {
       tmp = str1[i];
       str1[i] = str1[rind];
       str1[rind] = tmp;
       rind--;
   }
 
   printf("Reversed string is: %s\n\n", str1);
}

Sample Output:

Print a string in reverse order:                                                                              
 -------------------------------------                                                                        
Input a string to reverse : Welcome                                                                           
Reversed string is: emocleW 

Flowchart:

Flowchart : Print a string in reverse order

C Programming Code Editor:

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Next: Write a C program to find the length of a string without using the library function.

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C Programming: Tips of the Day

Static variable inside of a function in C

The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().

The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.

The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().

Ref : https://bit.ly/3fOq7XP