Question

print reverse of a string using C command line arguments

Answer 1

http://learn.onlinegdb.com/c_program_reverse_string_entered_command_line_arguments

this may be useful

Answer 2

#include<stdio.h>
#include<string.h>
main()
{
char str[20];
int i=0;
printf("Enter string:");
gets(str);
while(str[i]!=' \0')
{
i++;
}
i--;

printf("\nReverse string:");

while(i>=0)
{
printf("%c",str[i]);
i--;
}
}