关于C语言编程

显示全部楼层 · 2010-10-28 19:47:21

编写C程序：从键盘读入一行字符，只回显其中的字母、数字和空格字符。例如，如果输入是"Let's meet at 6:00pm."，输出为"Lets meet at 600pm"。
#include
int main(){
char nextChar;
printf("Input a string:");
do{
scanf("%c",&nextChar);
if(('a'int main(){ char nextChar; printf("Input a string:"); do{scanf("%c",&nextChar);if(('a'<=nextChar)&&(nextChar<='z')||('A'<=nextChar)&&(nextChar<='Z')||('0'<=nextChar)&&(nextChar<='9')) printf("%c",nextChar);else
if(nextChar==' ')
printf(" "); else
printf("");}whi

千问 · 2010-10-28 19:47:21

main函数没有返回