您好,我正在做一个项目,我需要我的程序从命令行运行,并且能够读取将在程序中使用的标志和文件名。
这是我当前的代码。它在不输入任何标志的情况下编译。我不认为我的 GetArgs 有任何作用。我对那部分代码有帮助。
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX 1024
#define IN 1 /* inside a word */
#define OUT 0 /* outside a word */
/* count lines, words, and characters in input */
int numInputArgs;
int idx;
void GetArgs (int argc, char **argv){
for (idx = 1; idx < 4; idx++) {
if (strcmp(argv[idx], "-c") == 0) {
printf("Flag -c passed\n");
break;
}
else if (strcmp(argv[idx], "-w") == 0) {
printf("Flag -w passed\n");
break;
}
else if (strcmp(argv[idx], "-l") == 0) {
printf("Flag -l passed\n");
break;
}
else if (strcmp(argv[idx], "-L") == 0) {
printf("Flag -L passed\n");
break;
}
else {
printf("Error: unknown flag\n");
exit(-1);
}
}
}// end GetArgs
void lineWordCount ( ) {
int c, nl, nw, nc, state;
state = OUT; nl = nw = nc = 0;
while ((c = getchar()) != EOF) {
++nc;
if (c == '\n')
++nl;
if (c == ' ' || c == '\n' || c == '\t')
state = OUT;
else if (state == OUT) {
state = IN; ++nw;
}
printf("%d %d %d\n", nl, nw, nc);
}
}// end lineWordCount
int main(int argc, char **argv){
GetArgs(argc, argv);
lineWordCount();
printf("Hello");
//fclose( src );
}