簡單實現C語言中有幾個string相關的function。
part 5 - strrev (string reverse)
Function Name : strrev
Definition : Reverse the input string.
Prototype : void strrev_imp ( char *str );
#include <stdio.h>
#include <string.h>
void strrev_imp ( char *str )
{
char temp;
int i,j;
for( i = 0, j = strlen(str) - 1 ; i < j ; ++i , --j )
{
temp = str[j];
str[j] = str[i];
str[i] = temp;
}
}
int main()
{
char s1[30] = "stringA";
strrev_imp(s1);
printf("result = %s\n", s1);
return 0;
}
Result :
sh-4.2$ gcc -o main *.c
sh-4.2$ main
result = Agnirts
