我有C代码做一些计算(我认为与我的问题无关)。该程序将要求一些参数进行计算。问题是当我运行代码时,scanf(“%c”,& ch)工作不正常。scanf()不带任何输入
我对是否可以重现此问题感兴趣,因为它似乎没有出现任何问题,是吗?
我发布了一个可编辑和缩短版本的程序。
#include<stdio.h>
#include<stdlib.h>
#include<math.h>
int main(void)
{
float Dia_MM, Dia_I, Se1, Se, Sut = 75.00;
float Ka, Kb, Kc, Kd, Ke, Kf;
char Ch;
char Bt;
float Reli;
printf("Please input the surface condition of the shaft: G, M, H or A\n");
scanf("%c", &Ch);
// getchar();
printf("Please input the diameter of the shaft in inch\n");
scanf("%f", &Dia_I);
printf("Please specify whether your shaft is in bending (B) or torsion (T)");
scanf("%c", &Bt);// THIS LINE IS JUST SKIPPED
exit(0);
}
的GDB日志中列出:
Breakpoint 1, main() at main.c:25
25 float Dia_MM, Dia_I, Se1, Se, Sut = 75.00;
(gdb) n
30 printf("Please input the surface condition of the shaft: G, M, H or A\n");
(gdb) n
Please input the surface condition of the shaft: G, M, H or A
31 scanf("%c", &Ch);
(gdb) G
Undefined command: "G". Try "help".
(gdb) n
G
33 printf("Please input the diameter of the shaft in inch\n");
(gdb) n
Please input the diameter of the shaft in inch
34 scanf("%f", &Dia_I);
(gdb) n
4.5
35 printf("Please specify whether your shaft is in bending (B) or torsion (T)");
(gdb) n
36 scanf("%c", &Bt);
(gdb) n //PROBLEM HERE. SCANF() GOES BEFORE TAKE ANY INPUT.
37 exit(0);
“请指定轴是否弯曲或扭转。” * chortle * – x0n 2012-02-18 23:06:44
@ x0n:我会更加担心振动:-) – thkala 2012-02-18 23:08:44