#include <stdio.h>
int main()
{
double n, total ; /* a number is input into n and add to total */
double average ; /* average of compute by total divide by i */
int i ;
total = 0 ;
printf( "\nCompute the average of some numbers between 0 and 100 \n" );
for( i = 0 ; ; i++ )
{ printf( "please input a number (-1 to stop input) :> ") ;
scanf( "%lg", &n ) ;
if ( n > 100 )
{ printf("Value input is too large. It is ignore!\n");
i-- ;
continue;
}
if ( n < -1 )
{ printf("Value input is too small. It is ignore!\n");
i-- ;
continue;
}
if ( n == -1 ) break ;
total = total + n ;
}
if ( i == 0 )
{ printf("No number is input! Nothing to compute the average!\n");
}
else
{ average = total / i ;
printf( " The average of all the numbers are : %g\n\n" , average ) ;
}
}
将上述代码中的for语句转换为while语句
这是计算0-100之间数值平均数的一个小程序
以下是我改写后的代码
运行后如果分别输入1,2,3 则可以得到正确答案
如果先输入大于100和小于-1的数 再输入正确范围的数值则运算有误
请各位前辈看看我改写的代码中哪里出错了#include <stdio.h>
int main()
{
double n, total ; /* a number is input into n and add to total */
double average ; /* average of compute by total divide by i */
int i ;
total = 0 ;
printf( "\nCompute the average of some numbers between 0 and 100 \n" );
i = 0 ;
while(1)
{
printf( "please input a number (-1 to stop input) :> ") ;
scanf( "%lg", &n ) ;
if ( n > 100 )
{ printf("Value input is too large. It is ignore!\n");
--i ;
continue;
}
if ( n < -1 )
{ printf("Value input is too small. It is ignore!\n");
--i
;
continue;
}
if ( n == -1 ) break;
{
total = total + n ;
i++;
}
if ( i == 0 )
{ printf("No number is input! Nothing to compute the average!\n");
}
else
{
i++ ;
total = total + n ;
average = total / i ;
}
}
printf( " The average of all the numbers are : %g\n\n" , average ) ;
}
1 回答
wwpbjing
TA贡献20条经验 获得超5个赞
#include <stdio.h> int main() { double n, total ; /* a number is input into n and add to total */ double average ; /* average of compute by total divide by i */ int i ; total = 0 ; printf( "Another Program\nCompute the average of some numbers between 0 and 100 \n" ); i = 0 ; while(1) { printf( "please input a number (-1 to stop input) :> ") ; scanf( "%lg", &n ) ; if ( n > 100 ) { printf("Value input is too large. It is ignore!\n"); --i ; continue; } if ( n < -1 ) { printf("Value input is too small. It is ignore!\n"); --i; continue; } if ( n == -1 ) break; total = total + n ; i++; } // while循环在此结束 if ( i == 0 ) { printf("No number is input! Nothing to compute the average!\n"); } else { i++ ; total = total + n ; average = total / i ; } printf( " The average of all the numbers are : %g\n\n" , average ) ; }
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