View Code of Problem 52

#include <stdio.h>
#include <string.h>
int main(){
	
  int i,j=0;
  char str1[100];
  gets(str1);
  len = strlen(str1);
  for(i=len-1;i>=0;i--){
  	
    str2[j++] = str1[i];
  }
  puts(str2);
  


return 0;
}
/*
Main.c: In function 'main':
Main.c:7:3: warning: 'gets' is deprecated (declared at /usr/include/stdio.h:638) [-Wdeprecated-declarations]
   gets(str1);
   ^
Main.c:8:3: error: 'len' undeclared (first use in this function)
   len = strlen(str1);
   ^
Main.c:8:3: note: each undeclared identifier is reported only once for each function it appears in
Main.c:11:5: error: 'str2' undeclared (first use in this function)
     str2[j++] = str1[i];
     ^
*/