一道C语言题:整理字符串,将字符串中前导和后随的空白符删除,字符串中间...答:char str1[20],str2[20]int i,j;scanf("%s",str1);for(i=0,j=0;i<=19;i++,j++){ if(str[i]!==' ') str2[j]==str1[i];if(str[i]==' ') j--;} printf("%s",str2);或:include<stdio.h> void trim_sp(char *str){ int len,i,j;len = strlen(str);while ...