程序代码：

#include< stdio.h >
#include< stdlib.h >
void main()
{
    int size_t( char *t );
    char t[] = { 'a',' b', 'c', 'd' };
    int l;
    l = size_t( t );
    printf( "%d",l);
    system( "pause" );
}

int size_t( char t[] )
{
    int length = 0;
    for( ; *t++ !='\0';length +=1)
        return length;
}

程序代码：

#include< stdio.h >
#include< stdlib.h >
int sizet( char t[] )
{
    int length = 0;
    for( ; *t++ !='\0';length +=1);//这里
        return length;
}
void main()
{
    char t[] = "abcd";
    int l;
    l = sizet( t );
    printf( "%d",l);
    system( "pause" );
}

程序代码：

# include <stdio.h>

int size_123 (char *t)
{
    for(int length = 0; *t++ !='\0';length +=1)
    {}
    return length;
}

int main (void)
{
    int l;
    char t[] = "sdasjfdsafdsf";
    char * p;
    p = t;
    l = size_123 (p);
    printf ("%d",l);
    return 0;
}

程序代码：

#include< stdio.h >
#include< stdlib.h >


void main()
{    int a( char t[]);
    char t[] = "abcd";
    int l;
    l = a( t );
    printf( "%d",l);
    system( "pause" );
}

int a( char t[] )
{
    int length = 0;
    while( *t !='\0')
        length++,*t++;
        return length;
}