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public c v1 · immutable#include <stdio.h>int main(){ FILE *fp; char c; fp = fopen("file1.txt","r"); // Check if it opened if(!fp){ perror("fopen"); } else{ // Everything is going swell while(c = fgetc(fp) != EOF){ FILE *fp2; fp2 = fopen("file2.txt","a"); if(!fp2){ perror("fopen"); break; } else{ fputc(fp, c); } fclose(fp2); } fclose(fp); }}