- 144 名前：デフォルトの名無しさん mailto:sage [2007/11/09(金) 11:08:42 ]
- #include <stdio.h>
#include <string.h>
void encodeDecode(int codeOffset, FILE * fpIn, FILE * fpOut)
{
int ch;
while ((ch = fgetc(fpIn)) != EOF) {
fputc(ch == '\n' ? ch : ch + codeOffset, fpOut);
}
}
int main(int argc, char ** argv)
{
int codeOffset;
FILE * fpIn;
FILE * fpOut;
if (argc > 3) goto error;
if (strcmp(argv[1], "c") == 0) {
codeOffset = 1;
} else if (strcmp(argv[1], "d") == 0) {
codeOffset = -1;
} else {
goto error;
}
fpIn = fopen(argv[2], "r");
if (fpIn == NULL) goto error;
fpOut = fopen(argv[3], "w");
if (fpOut == NULL) goto error;
encodeDecode(codeOffset, fpIn, fpOut);
return 0;
error:
fprintf(stderr, "error\n");
return 1;
}
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