去掉字符串首尾空格的程序(不再声明变量)

#include <stdio.h> char* trim(char* str) { if( ' ' == *str ) { while( ' '== *str ) { str++; if( 0 == *str ) return 0; } trim( str ); return str; }else{ while( ' ' != *str ){ str++; if( 0 == *str ) return 0; } if( 0 == trim( str ) ){ *str=0; return str; } return str; } } int main(int argc, char *argv[]) { char sz[]=" aaaa bbb ccc d "; printf( "__%s__ " , trim(sz) ); return 0; }

 

 

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