[Solved] How to pass structure by reference in C?

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Here is the problem,

void readStructs(tMystruct *theVar)
{
scanf("%d",theVar.id); //<------problem 
scanf("%f",theVar.length); //<------problem 
}

You should access Structure pointer member using -> operator and also you’re missing & that will eventually cause a segmentation fault.

Here is the modified code,

void readStructs(tMystruct *theVar)
{
scanf("%d",&theVar->id);
scanf("%f",&theVar->length);
}

solved How to pass structure by reference in C?