如何将输出格式化为6列?

MY output is 285 numbers but its all under column1(in ascending order). It is somehow supposed to be split into 50 numbers for the first 5 columns and then 35 for the last one.

我的输出是285个数字，但都在第一列(按升序)下。它应该被分成前5列的50个数字，最后5列的35个数字。

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define MAX_SIZE_FLOAT n
#define MAX_NUM_OF_FLOATS 1000
void swap(float * a, float * b);`enter code here`
void sort(float ary [], int numElements );
int main(int argc, char** argv) {
int i,num_read;
float x, n;
float a[MAX_NUM_OF_FLOATS];`enter code here`
double x1,x2,mn;
FILE * inFile;
inFile = fopen("DataFloat.txt", "r");
if( inFile == NULL) {
    printf("\nError opening input file; program aborted\n");
    exit(1);
}
i = 0;
while( fscanf(inFile, "%f", & a[i]) == 1 ){
    x1+=a[i];
  x2+=a[i]*a[i];
    i++;       
  mn=x1/(double)n;
  }
  fclose(inFile);
   if(n<1){
   printf("\nError.");
    exit(1);
   }  
   num_read = i;
      for(i = 0; i < num_read; i++)

sort(a, num_read);

printf("Column1    Column2   Column3   Column4   Column5   Column6\n",a[i]);
   for(i = 0; i < num_read; i++) <--Am i supposed to be using a for loop here or while-loop?
   printf("%5.2f\n", a[i] );
   return (EXIT_SUCCESS);
}  // end of main

void sort(float ary [], int numElements ) {
 int i, currentIndex, foundIndex, nextIndex;
 float min;

// the outer for-loop is the placement loop
for( currentIndex = 0; currentIndex < numElements - 1; currentIndex++){
    min = ary[currentIndex];
    foundIndex = currentIndex;
    nextIndex = currentIndex + 1;

    // the inner for-loop selects the best element from the rest of ary
    for( i = nextIndex; i < numElements; i++)
        if( ary[i] < min ){
            min = ary[i];
            foundIndex = i;
        }
    swap(& ary[currentIndex], & ary[foundIndex]);
}
}

void swap(float * a, float * b){
float temp;
temp = *a;
*a = *b;
*b =temp;
}

MY output is 285 numbers but its all under column1(in ascending order). It is somehow supposed to be split into 50 numbers for the first 5 columns and then 35 for the last one.

我的输出是285个数字，但都在第一列(按升序)下。它应该被分成前5列的50个数字，最后5列的35个数字。

2 个解决方案

#1

I would imagine, then, that you would simply format your output with six columns in it, something like

我可以想象，你可以简单地用6列来格式化你的输出，就像这样

for (i = 0; i < 50; ++i){
    printf("%d\t%d\t%d\t%d\t%d",
           arr[i], arr[i + 50], arr[i + 100], arr[i + 150], arr[i + 200]);
    if(i < 35)
        printf("\t%d", arr[i + 250]);
    printf("\n");
}

EDIT: Updated according to Jonathan Leffler's comment.

编辑:根据乔纳森·莱弗勒的评论更新。

#2

This works for me (according to my understanding of the problem). I've parameterized the code so that the number of values, number of columns, and number of complete rows are named constants. There's an assertion that ensures that Column6 contains some data. The code does not generate the column headings dynamically, but it would not be hard to make it do so.

(根据我对这个问题的理解)。我参数化了代码，使值的数量、列的数量和完整行的数量被命名为常量。有一个断言可以确保Column6包含一些数据。代码不会动态地生成列标题，但是这样做并不困难。

#include <assert.h>
#include <stdio.h>

enum { NUM_VALUES  = 285 };
enum { NUM_COLUMNS =   6 };
enum { NUM_ROWS    =  50 };

int main(void)
{
    double data[NUM_VALUES];
    int i;

    assert(NUM_VALUES > (NUM_COLUMNS - 1) * NUM_ROWS &&
           NUM_VALUES <= (NUM_COLUMNS) * NUM_ROWS);

    for (i = 0; i < NUM_VALUES; i++)
        data[i] = i * 10.0 + i / 100.0;

    printf("Column1   Column2   Column3   Column4   Column5   Column6\n");
    for (i = 0; i < NUM_ROWS; i++)
    {
        char *pad = "";
        for (int j = 0; j < NUM_COLUMNS; j++)
        {
            int index = j * NUM_ROWS + i;
            if (index < NUM_VALUES)
                printf("%s%7.2f", pad, data[index]);
            pad = "   ";                 
        }
        putchar('\n');
    }
    return 0;
}

Sample output:

样例输出:

Column1   Column2   Column3   Column4   Column5   Column6
   0.00    500.50   1001.00   1501.50   2002.00   2502.50
  10.01    510.51   1011.01   1511.51   2012.01   2512.51
  20.02    520.52   1021.02   1521.52   2022.02   2522.52
  30.03    530.53   1031.03   1531.53   2032.03   2532.53
  40.04    540.54   1041.04   1541.54   2042.04   2542.54
  50.05    550.55   1051.05   1551.55   2052.05   2552.55
  60.06    560.56   1061.06   1561.56   2062.06   2562.56
  70.07    570.57   1071.07   1571.57   2072.07   2572.57
  80.08    580.58   1081.08   1581.58   2082.08   2582.58
  90.09    590.59   1091.09   1591.59   2092.09   2592.59
 100.10    600.60   1101.10   1601.60   2102.10   2602.60
 110.11    610.61   1111.11   1611.61   2112.11   2612.61
 120.12    620.62   1121.12   1621.62   2122.12   2622.62
 130.13    630.63   1131.13   1631.63   2132.13   2632.63
 140.14    640.64   1141.14   1641.64   2142.14   2642.64
 150.15    650.65   1151.15   1651.65   2152.15   2652.65
 160.16    660.66   1161.16   1661.66   2162.16   2662.66
 170.17    670.67   1171.17   1671.67   2172.17   2672.67
 180.18    680.68   1181.18   1681.68   2182.18   2682.68
 190.19    690.69   1191.19   1691.69   2192.19   2692.69
 200.20    700.70   1201.20   1701.70   2202.20   2702.70
 210.21    710.71   1211.21   1711.71   2212.21   2712.71
 220.22    720.72   1221.22   1721.72   2222.22   2722.72
 230.23    730.73   1231.23   1731.73   2232.23   2732.73
 240.24    740.74   1241.24   1741.74   2242.24   2742.74
 250.25    750.75   1251.25   1751.75   2252.25   2752.75
 260.26    760.76   1261.26   1761.76   2262.26   2762.76
 270.27    770.77   1271.27   1771.77   2272.27   2772.77
 280.28    780.78   1281.28   1781.78   2282.28   2782.78
 290.29    790.79   1291.29   1791.79   2292.29   2792.79
 300.30    800.80   1301.30   1801.80   2302.30   2802.80
 310.31    810.81   1311.31   1811.81   2312.31   2812.81
 320.32    820.82   1321.32   1821.82   2322.32   2822.82
 330.33    830.83   1331.33   1831.83   2332.33   2832.83
 340.34    840.84   1341.34   1841.84   2342.34   2842.84
 350.35    850.85   1351.35   1851.85   2352.35
 360.36    860.86   1361.36   1861.86   2362.36
 370.37    870.87   1371.37   1871.87   2372.37
 380.38    880.88   1381.38   1881.88   2382.38
 390.39    890.89   1391.39   1891.89   2392.39
 400.40    900.90   1401.40   1901.90   2402.40
 410.41    910.91   1411.41   1911.91   2412.41
 420.42    920.92   1421.42   1921.92   2422.42
 430.43    930.93   1431.43   1931.93   2432.43
 440.44    940.94   1441.44   1941.94   2442.44
 450.45    950.95   1451.45   1951.95   2452.45
 460.46    960.96   1461.46   1961.96   2462.46
 470.47    970.97   1471.47   1971.97   2472.47
 480.48    980.98   1481.48   1981.98   2482.48
 490.49    990.99   1491.49   1991.99   2492.49