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The C programming language made simple

Reading from text files in C

#include <stdio.h> #include <stdlib.h> #include <string.h> int main(int argc, char* argv[]) { FILE* in; FILE* out; char buffer_in[256], buffer_out[256]; out = fopen("point.dat", "w"); if (out == NULL) { return 1; } snprintf(buffer_out, 256, "%d %d\n", p1.x, p1.y); size_t bytesWrote = fwrite(buffer_out, sizeof(char), strlen(buffer_out), out); fclose(out); if (bytes_wrote != strlen(buffer_out)) { return 1; } // -- READ -- in = fopen("point.dat", "r"); if (in == NULL) { return 1; } if (fgets(buffer_in, 256, in) == NULL) { fclose(in); return 1; } fclose(in); sscanf(buffer_in, "%d %d\n", &p2.x, &p2.y); printf("Read from file the point: %d %d\n", p2.x, p2.y); return 0; }