#include <stdio.h> #pragma warning(disable: 4996) int main(void) { FILE* fp; char* fname = "log.txt"; char* str = "aaa"; int i; fp = fopen(fname, "a+"); if (fp == NULL) { printf("%sファイルが開けません?n", fname); return -1; } for (i = 0; i < 3; i++) { fputc(str[i], fp); } int var = 30; fclose(fp); printf("%sファイル書き込みが終わりました?n", fname); return 0; }
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