例: while与do- while区别 f include <stdio.h> f include <stdio.h> main( maino fint i=65; Rint i=65; while(i<a) dolputchar(i) dputchar(i); i++;) 1++; while(i<a; 无输出 输出A例：while与do-while区别 ＃include <stdio.h> main( ) {int i=65; do{putchar(i); i++;}while(i<‘A’)； } ＃include <stdio.h> main( ) {int i=65; while(i<‘A’) {putchar(i); i++; } } 无输出 输出A