Convert the expression ((A + B) * C – (D – E) ^ (F + G)) to equivalent Prefix Notation

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• What would be the output of the following program? main() { char a[] = "Visual C++"; char *b = "Visual C++"; printf (" %d %d", sizeof (a), sizeof (b)); printf (" %d %d", sizeof (*a), sizeof (*b)); }
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• Point out the error, if any, in the following program. #include "stdio.h" main() { unsigned char; FILE *fp; fp = fopen ("trail", "r"); while (( ch = getc (fp)) ! = EOF) printf ("%c", ch); fclose (fp); }
• Point out the error, if any, in the following program. #include "stdarg.h" main() { display ( 4, 12.5, 13.5, 14.5, 44.3); } display(int num, ...) { float c; int j; va_list ptr; va_start (ptr, num); for ( j = 1; j <= num; j++) { c = va_arg ( ptr, float ); printf (" %f", c); } }
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