将 1~100 的数据以 10x10 矩阵格式输出。

#include <stdio.h>int main() {int i, j, count;for(i = 1; i <= 10; i++) {for(j = i; j <=100; j += 10 )printf(" %3d", j);printf("\n");}return 0;
}

运行结果：

1  11  21  31  41  51  61  71  81  91
2  12  22  32  42  52  62  72  82  92
3  13  23  33  43  53  63  73  83  93
4  14  24  34  44  54  64  74  84  94
5  15  25  35  45  55  65  75  85  95
6  16  26  36  46  56  66  76  86  96
7  17  27  37  47  57  67  77  87  97
8  18  28  38  48  58  68  78  88  98
9  19  29  39  49  59  69  79  89  99
10  20  30  40  50  60  70  80  90 100

等差数列输出 10x10 矩阵格式。

#include <stdio.h>int main() {int i, j, count;int start, end;start = 2, end = 10;for(i = start; i <= end; i++) {count = i;for(j = 1; j <= 10; j++) {printf(" %3d", count*j);}printf("\n");}return 0;
}

运行结果：

2   4   6   8  10  12  14  16  18  20
3   6   9  12  15  18  21  24  27  30
4   8  12  16  20  24  28  32  36  40
5  10  15  20  25  30  35  40  45  50
6  12  18  24  30  36  42  48  54  60
7  14  21  28  35  42  49  56  63  70
8  16  24  32  40  48  56  64  72  80
9  18  27  36  45  54  63  72  81  90
10  20  30  40  50  60  70  80  90 100

乘法运算格式。

#include <stdio.h>int main() {int i, j, n;n = 3;j = 1;for(i = n; i <= (n*10); i+=n) {printf("%3d  x %2d  =  %3d\n", n, j, i);j++;}return 0;
}

运行结果：

3  x  1  =    3
3  x  2  =    6
3  x  3  =    9
3  x  4  =   12
3  x  5  =   15
3  x  6  =   18
3  x  7  =   21
3  x  8  =   24
3  x  9  =   27
3  x 10  =   30