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ANSI C program Linux system using the gcc compiler
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<p>Reading XXXX a file in C</p><pre> #include <XXXXX.h&XX; XXXX() { FILE *fp; char XXXX[255]; fp = fopen("/tmp/test.txt", "r"); XXXXXX(XX, "%s", XXXX); XXXXXX("1 : %s\n", buff ); fgets(buff, XXX, (FILE*)fp); XXXXXX("2: %s\n", XXXX ); fgets(XXXX, XXX, (XXXX*)fp); XXXXXX("X: %s\n", XXXX ); fclose(XX); }</XXX><p><br></p><p>Binary I/X functions of C:</p><XXX> size_t fread(void *ptr, XXXXXX XXXXXXXXXXXXXXXX, size_t XXXXXXXXXXXXXXXXXX, FILE *XXXXXX); size_t fwrite(const void *ptr, XXXXXX size_of_elements, XXXXXX number_of_elements, XXXX *XXXXXX);</XXX><p><br></p><p><XX></p><p>XXXXX handling in C if XXX file can't be opened:</p><XXX> #XXXXXXX <XXXXX.h> #include <XXXXX.h&XX; #XXXXXXX <XXXXXX.h&XX; extern XXX XXXXX ; int main () { XXXX * XX; XXX errnum; XX = fopen ("XXXXXXX.txt", "XX"); XX (XX == XXXX) { XXXXXX = errno; XXXXXXX(XXXXXX, "Value of errno: %d\n", XXXXX); XXXXXX("Error printed XX XXXXXX"); fprintf(stderr, "Error opening XXXX: %s\n", XXXXXXXX( errnum )); } XXXX { XXXXXX (pf); } return X; }</pre><p><XX></p>">
