Printf无法在某些点工作，无法找出公式

Question

这是我为学校所做的一个项目。我有两个问题，我一直无法解决。它们出现在admindistance和distancefunc函数中。我无法弄清楚为什么距离计算不准确。这会导致功能无法正常工作。秒问题是，在admindistance函数它应该打印距离，但这个printf语句似乎不工作。感谢任何人都能提供的帮助。

#include <stdio.h> 
#include <time.h> 
#include <math.h> 

int generatenum (int num) 
{ 
    return rand() % num + 1; 
} 

char admin (int nrow, int ncolumn) 
{ 
    char bypass; 
    printf ("Anything to tell me?\n"); 
    scanf (" %c", &bypass); 
    if (bypass == 'A') 
    { 
     printf ("Oh, your an administrator\n"); 
     printf ("The random location is %i,%i\n", nrow, ncolumn); 
     return bypass; 
    } 
    else 
    { 
    } 
} 

float admindistance (int nrow, int ncolumn) 
{ 
    float grow,gcolumn,distance,rowdifference,columndifference,rowpower,columnpower,oldistance; 
    _Bool foundtarget=0; 

    printf ("What is your first guess?"); 
    scanf ("%i%i", &grow, &gcolumn); 
    rowdifference = nrow - grow; 
    rowpower = pow (rowdifference, 2.0); 
    columndifference = ncolumn - gcolumn; 
    columnpower = pow (columndifference, 2.0); 
    distance = sqrt (rowdifference - columndifference); 
    printf ("Distance is %f\n", distance); 
    while (!foundtarget) 
    { 
     printf ("What is your next guess?"); 
     scanf ("%i%i", &grow, &gcolumn); 
     if (grow >= nrow) 
     { 
      printf ("Error: Value entered is outside array size"); 
     } 
     else if (gcolumn >= ncolumn) 
     { 
      printf ("Error: Value entered is outside array size"); 
     } 
     else 
     { 
      /* CONTINUE */ 
     } 
     rowdifference = nrow - grow; 
     rowpower = pow (rowdifference, 2.0); 
     columndifference = ncolumn - gcolumn; 
     columnpower = pow (columndifference, 2.0); 
     distance = sqrt (rowdifference - columndifference); 
     printf ("Distance is %f\n", distance); 
     if (nrow == grow && ncolumn == gcolumn) 
     { 
      foundtarget = 1; 
      printf ("Congrats you win!"); 
     } 
     else if (nrow - grow <= 1 && ncolumn - gcolumn <= 1) 
     { 
      printf ("YOU ARE ON FIRE!\n"); 
     } 
     else if (oldistance <= distance) 
     { 
      printf ("You are getting colder\n"); 
     } 
     else 
     { 
      printf ("You are getting hotter\n"); 
     } 
     oldistance = distance; 
    } 
    return 0; 
} 

float distancefunc (int nrow, int ncolumn) 
{ 
    float grow,gcolumn,distance,rowdifference,columndifference,rowpower,columnpower,oldistance; 
    _Bool foundtarget = 0; 

    printf ("What is your first guess?"); 
    scanf ("%i%i", &grow, &gcolumn); 
    while (!foundtarget) 
    { 
     printf ("What is your next guess?"); 
     scanf ("%i%i", &grow, &gcolumn); 
     if (grow >= nrow) 
     { 
      printf ("Error: Value entered is outside array size"); 
     } 
     else if (gcolumn >= ncolumn) 
     { 
      printf ("Error: Value entered is outside array size"); 
     } 
     else 
     { 
      /* CONTINUE */ 
     } 
     rowdifference = nrow - grow; 
     rowpower = pow (rowdifference, 2.0); 
     columndifference = ncolumn - gcolumn; 
     columnpower = pow (columndifference, 2.0); 
     distance = sqrt (rowdifference - columndifference); 
     if (nrow == grow && ncolumn == gcolumn) 
     { 
      foundtarget = 1; 
      printf ("Congrats you win!"); 
     } 
     else if (nrow - grow <= 1 && ncolumn - gcolumn <= 1) 
     { 
      printf ("YOU ARE ON FIRE!"); 
     } 
     else if (oldistance <= distance) 
     { 
      printf ("You are getting colder"); 
     } 
     else 
     { 
      printf ("You are getting hotter"); 
     } 
     oldistance = distance; 
    } 
    return 0; 
} 

int main (char bypass) 
{ 
    int row, column,nrow,ncolumn,grow,gcolumn,admininput; 

    printf ("Welcome to the Hotter-Colder Game!\n\n"); 
    printf ("How many rows and columns are in the grid?\n\n"); 
    scanf ("%i%i", &row, &column); 
    time_t seconds = time (NULL); 
    int seed = (unsigned)(seconds); 
    srand (seed); 
    int i = 0; 
    nrow = generatenum (row); 
    ncolumn = generatenum (column); 
    admin (nrow, ncolumn); 
    if (admininput == bypass) 
    { 
     admindistance (nrow, ncolumn); 
    } 
    else 
    { 
     distancefunc (nrow, ncolumn); 
    } 
    return 0; 
} 

Answer 1

您计算出rowpower和columnpower然后不使用它们。

rowdifference = nrow - grow; 
rowpower = pow(rowdifference,2.0); 
columndifference = ncolumn - gcolumn; 
columnpower = pow(columndifference,2.0); 
distance = sqrt(rowdifference - columndifference); 

我认为最后一行应

distance = sqrt(rowpower + columnpower); 

的秒的问题是，在admindistance功能它应该 打印的距离，但这个printf语句似乎没有 不工作。

printf声明本身在这里没有什么错，所以我会假设它是由同样的错误导致您的距离不被打印。