online compiler and debugger for c/c++

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#include <stdio.h> #include <stdlib.h> void main() { FILE *fptr; char fname[20]; char str; printf("\n\n Read an existing file :\n"); printf("------------------------------\n"); printf(" Input the filename to be opened : "); scanf("%s",fname); fptr = fopen (fname, "r"); if (fptr == NULL) { printf(" File does not exist or cannot be opened.\n"); exit(0); } printf("\n The content of the file %s is :\n",fname); str = fgetc(fptr); while (str != EOF) { printf ("%c", str); str = fgetc(fptr); } fclose(fptr); printf("\n\n"); }
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