Parameter passing in C/C++ -

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• inconsistent results printf long long int? 4 answers

i have 2 questions here.

q1: following program output(on 32-bit little-endian machine):

int main() {     long long = 0x1, b = 0x2, c = 0x3;     printf("a = %d, b = %d, c = %d.\n", a, b, c);     return 0; } 

and why?

q2:

why output of a, b , c different?

void func(int a, int b, int c) {     printf("a = %d, b = %d, c = %d.\n", a, b, c); } int main() {     long long = 0x1, b = 0x2, c = 0x3;     printf("a = %d, b = %d, c = %d.\n", a, b, c);     func(a, b, c);     return 0; } 

for q1: thumb rule default pramaeters should on right handside, func(int = 1, int b, int c) voilates rule because of =1. show error because if write func(5,6) compiler not understand 5 assigned a or b. while calling functions parameters assigned left right directions. basic funda.

simlarily func(int = 1, int b, int c = 3) if call func(7), compiler try assign 7 a, there nothing b. cause , error.