Question

Write the following (Saved as linex.c).
It must compile successfully using:
   gcc --std=c99 linex.c -o linex

(I have tried using 'gets' method which failed to compile said 'gets' is deprecated, so 'gets' may not be suitable for me, please provide me with alternative codes which can be compiled with c99)

It will read a single line of text from standard input.
It will print "R=" followed by that line backwards and then exit with status 0.

eg:

./linex
123456

would output
R=654321

Notes:
   i) your program must not leak memory or perform any invalid memory accesses.
   ii) your program should not use more memory than it needs.
   iii) do not call fgets or getline

Answer 1

Code :-

#include <stdio.h>
#include <string.h>

int main(void){
// Your code here!
char a[10];
int leng=0,g=0;
scanf("%[^\n]",a);
leng = strlen(a);

//print character from end//
printf("R=");
for(g = leng - 1; g >= 0; g--) {
printf("%c", a[g]);
}
}

output:-