计算机考试-C 矩阵输出—东方仙盟
Use VC++2010 to open the solution in the examinee folder. There is a source file named modi1.c in the project of this solution. In this program, the function fun() stores data with specific rules in an m‑row and m‑column two‑dimensional array according to the formal parameter m (2 ≤ m ≤9). The main() function prints the final result.
Sample output 1: If input is 2 Output: 1 2 2 4
Sample output 2: If input is 4 Output: 1 2 3 4 2 4 6 8 3 6 9 12 4 8 12 16
Please correct the errors in the program to get the correct running result. Note: Part of the source code is stored in modi1.c. Do not modify the main() function. Do not add or delete code lines. Do not change the overall program structure.
Key Test Points Summary
- Two‑dimensional array function parameter passing. In C language, a two‑dimensional array cannot be passed as
int **a. The second dimension size must be specified when passing a two‑dimensional array as a function formal parameter. - Two‑dimensional array element assignment rule. Observe the sample matrix: the value of element at row j, column k equals
(j+1)*(k+1), notj*k. Array subscripts start from zero, while matrix values start from 1. - Nested loop for two‑dimensional array traversal. Double for‑loops are used to visit every element in m‑row and m‑column matrix.
- Two‑dimensional array input and output. Use nested loops in main function to print matrix elements on screen.
- Macro definition for array size. Use
#defineto set maximum array dimension.
Error analysis (plain text)
Error 1: Function parameterint **ais wrong. When receiving a two‑dimensional array, formal parameter should beint a[M][M]orint a[][M]. Double pointer can not match two‑dimensional array argument.
Error 2: Assignment statementa[j][k]=k*j;is wrong. Since array subscripts start from zero, real matrix value is(j+1)*(k+1).
Sample correct core code
void fun(int a[M][M],int m) { int j,k; for(j=0;j<m;j++) for(k=0;k<m;k++) a[j][k]=(j+1)*(k+1); }人人皆为创造者，共创方能共成长
每个人都是使用者，也是创造者；是数字世界的消费者，更是价值的生产者与分享者。在智能时代的浪潮里，单打独斗的发展模式早已落幕，唯有开放连接、创意共创、利益共享，才能让个体价值汇聚成生态合力，让技术与创意双向奔赴，实现平台与伙伴的快速成长、共赢致远。
原创永久分成，共赴星辰大海
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在全球化与数字化浪潮中，东方仙盟始终秉持开放协作、知识共享的理念，积极拥抱开源技术与开放标准。我们相信，唯有打破技术壁垒、汇聚全球智慧，才能真正推动行业的可持续发展。
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阿雪技术观
在科技发展浪潮中，我们不妨积极投身技术共享。不满足于做受益者，更要主动担当贡献者 。无论是分享代码、撰写技术博客，还是参与开源项目 维护改进，每一个微小举动都可能蕴含推动技术进步的巨大能量。东方仙盟是汇聚力量的天地，我们携手在此探索硅基 生命，为科技进步添砖加瓦。
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