error code, expected unqualified-id before numeric constant

Projects Programming
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for ( int 1 = 0 ; 1 < n_array ; 1++; ) { //poll all switches
expected unqualified-id before numeric constant I am giving you a fault How can I get emergency help

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How can I get emergency help

Call the emergency hotline.

for ( int 1 = 0 ; 1 < n_array ; 1++; )

The loop index can NOT be a number, you maroon.

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for ( int  i = 0 ; i < n_array ;   i++; )
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thanks to friends who have separated my problem solving time