What is the difference between global and local variables in C?

Global variables are those declared outside the scope of functions, while local va...

Question

What is the difference between global and local variables in C?

Global variables are those declared outside the scope of functions, while local variables are those declared at the beginning of a block and their scopes are restricted to the blocks in which they were declared.
Local variables are those declared outside the scope of functions, while global variables are those declared at the beginning of a block and their scopes are restricted to the blocks in which they were declared.
a) Only the first statement is correct.
b) Only the second statement is correct.
c) Both statements are correct.
d) Both statements are incorrect.

Ed · Answer

A diferença entre variáveis globais e locais em C é a seguinte:

Variáveis globais são declaradas fora do escopo das funções e podem ser acessadas por qualquer função dentro do programa. Elas têm uma vida útil durante toda a execução do programa.

Variáveis locais são declaradas dentro do escopo de uma função ou bloco de código e só podem ser acessadas dentro desse escopo. Elas têm uma vida útil limitada ao tempo de execução desse bloco ou função.

Portanto, a alternativa correta é:

c) Ambas as afirmações estão corretas.

What is the difference between global and local variables in C? Global variables are those declared outside the scope of functions, while local va...

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