C用语言：用一维数组编写程序，从键盘上读入3个字符并反序输出

比较逐个输入输出字符和一次输入/输出整个字符串的程序编写方法。一样是反序输出

#include "stdio.h"
void main(){
char ary[3];
for (int i=0;i<3;i++){
scanf("%c",ary+i);
}
for (i=2;i>=0;i--){
printf("%c",ary[i]);
}
printf("\n");
}

#include int main() { char a,b; a=getchar(); scanf("%c", &b ); printf("a=%c\n", a ); printf("b=%c\n", b ); return 0; } #include int main() { int i; double d ; char c; printf("input char :" ); c=getchar(); putchar(c); printf("input integer :" ); scanf("%d", &i ); printf("i=%10d\n", i ); printf("input float:" ); scanf("%lf", &d ); printf("d=%.2lf\n", d ); return 0; }