使用c++代码删除csv文件指定行和列

您可以使用以下代码来删除指定的行和列：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main() {
    FILE *fp1, *fp2;
    char file_name[100], temp[] = "temp.csv", line[200];
    int del_row, del_column, row_cnt = 0, col_cnt = 0, i, j;

    printf("Enter the name of the CSV file: ");
    scanf("%s", file_name);
    printf("Enter the row and column number to delete: ");
    scanf("%d %d", &del_row, &del_column);

    fp1 = fopen(file_name, "r");
    fp2 = fopen(temp, "w");

    if (fp1 == NULL || fp2 == NULL) {
        printf("Error in opening file!");
        return 0;
    }

    while (fgets(line, sizeof(line), fp1)) {
        row_cnt++;
        col_cnt = 0;
        char *pos = line;

        while ((pos = strchr(pos, ','))) {
            col_cnt++;
            pos++;
        }
        rewind(fp1);

        if (row_cnt == del_row) {
            continue;
        }

        col_cnt = 0;
        for (i = 1; i <= row_cnt; i++) {
            fgets(line, sizeof(line), fp1);

            if (i != del_row) {
                col_cnt = 0;

                for (j = 0; j < strlen(line); j++) {
                    if (line[j] == ',' && ++col_cnt == del_column) {
                        continue;
                    }

                    fprintf(fp2, "%c", line[j]);
                }
            }
        }
    }

    fclose(fp1);
    fclose(fp2);
    remove(file_name);
    rename(temp, file_name);
    printf("Row %d and column %d deleted from %s", del_row, del_column, file_name);
    return 0;
}

这个代码将从用户输入的 CSV 文件中删除指定的行和列，并将结果写入一个名为 "temp.csv" 的临时文件。然后，它将删除原始文件并将临时文件重命名为原始文件名。请注意，此代码只适用于单行单列删除。

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