假设我从外部计算机获得以下结果:
Value_1:(A=12.34, B=34.56, C=12.34, D=34.67)
我想用strtok获得这些值,所以我有以下代码可以完全满足我的要求
ptr = strtok(buff, "Value_,=A:B:C:D()");
i = 0;
while (ptr != NULL)
{
if (i == 0)
strcat(out1, ptr);
if (i == 1)
strcat(out2, ptr);
if (i == 2)
strcat(out3, ptr);
if (i == 4)
strcat(out4, ptr);
if (i == 6)
strcat(out5, ptr);
ptr = strtok(NULL, "Value_,=A:B:C:D()");
i++;
}
printf("Results: %s, %s, %s, %s, %s\n", out1, out2, out3, out4, out5);
现在我的问题是,如果我有更多或更少的变量,如以下示例所示,如何改善我的ptr变量以接收这些不同的变量值?
Value_1:(A=12.34, B=34.56, C=12.34, D=34.67, E=50.68)
Value_1:(A=12.34, B=34.56, C=12.34, D=34.67, E=43.96, F=12.45)
Value_1:(A=12.34, B=34.56, D=34.67)
更新
解决的办法是我改变了
ptr = strtok(buff, "Value_,=A:B:C:D()");
一个简单的
ptr = strtok(buff, "Value_,=:()");
最佳答案
#include <stdio.h>
#include <string.h>
struct datap {
char *sym;
char *val;
};
int main(void){
char *test_rec[] = {
"Value_1:(A=12.34, B=34.56, C=12.34, D=34.67)",
"Value_1:(A=12.34, B=34.56, C=12.34, D=34.67, E=50.68)",
"Value_1:(A=12.34, B=34.56, C=12.34, D=34.67, E=43.96, F=12.45)",
"Value_1:(A=12.34, B=34.56, D=34.67)"
};
int i, j, c, rec_num = sizeof(test_rec)/sizeof(char*);
char buff[1024],* p;
struct datap out[26];
for(i=0; i<rec_num;++i){
strcpy(buff, test_rec[i]);
strtok(buff, "(");//skip to '('
for(c=0;NULL!=(p=strtok(NULL, " ="))/* && c < 26*/;++c){
out[c].sym = p;
out[c].val = strtok(NULL, ", )");
}
printf("Results: ");
for(j = 0; j < c; ++j){
printf("%s=%s", out[j].sym, out[j].val);
if(j < c - 1)
printf(", ");
else
printf("\n");
}
}
return 0;
}
关于c - 使用strtok转义字符,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/17064477/