用C语言将字符串读入二维数组
我想使用getchar从文本文件标准输入读取大量字符串到二维数组。请忽略代码中的魔法数字用C语言将字符串读入二维数组,c,arrays,string,getchar,C,Arrays,String,Getchar,我想使用getchar从文本文件标准输入读取大量字符串到二维数组。请忽略代码中的魔法数字 #include <stdio.h> #include <stdlib.h> int main(int argc, char *argv[]) { char string[100][20]; int c, j = 0, i = 0; while ((c = getchar()) != EOF) { while (c != '\n
#include <stdio.h>
#include <stdlib.h>
int
main(int argc, char *argv[]) {
char string[100][20];
int c, j = 0, i = 0;
while ((c = getchar()) != EOF) {
while (c != '\n') {
string[j][i] = c;
i++;
}
string[j][i] = '\0';
j++;
}
printf('string is: %s', string);
return 0;
}
您需要在内部while循环中再使用一个getchar
while (c != '\n') {
string[j][i] = c;
i++;
c = getchar(); /* this you need here to fetch char until \n encounters */
}
当这个字符串[j][i]='\0'时,需要再次使变量i为0;完成了
还有这个
printf('string is: %s', string);
这是错误的。应该是
printf("string is: %s", string); /* use double quotation instead of single */
示例代码
int main(int argc, char *argv[]) {
char string[100][20];
int c, j = 0, i = 0;
while ((c = getchar()) != EOF) { /* this loop you need to terminate by pressing CTRL+D(in linux) & CTRL+Z(in windows) */
while (c != '\n') { /* this loop is for 1D array i.e storing char into each 1D array */
string[j][i] = c;
i++;
c = getchar(); /* add this, so that when you press ENTER, inner while loop fails */
}
string[j][i] = '\0';
j++;
i = 0;/* make it zero again, so that it put char into string[j][0] everytime once 1 line is completed */
}
for(int row = 0;row < j;row++) { /* rotate loop j times since string is
2D array */
printf("string is: %s", string[row]);
}
return 0;
}
标准输入与从文件读取不同。