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#include<stdio.h>
void main()
{
	int num,count=-1,num1,ount=0,set=0;
	while(scanf("%d",&num)>0))
	{
		if(num!=-1)
		{
			count++;
			if(count>0)
			{
				if(num1=num)
				{
					set++;
					num1=num;
					ount++;
				}
 
			else
			{
				num1=num;
				ount++;
 
			}
		}
		else
		{
			break;
		}
	}
	printf("%d",ount-set);
 
}

prog.c:2:1: error: 'main' must return 'int'
void main()
^~~~
int
prog.c:5:27: error: extraneous ')' after condition, expected a statement
        while(scanf("%d",&num)>0))
                                 ^
prog.c:12:12: warning: using the result of an assignment as a condition without parentheses [-Wparentheses]
                                if(num1=num)
                                   ~~~~^~~~
prog.c:12:12: note: place parentheses around the assignment to silence this warning
                                if(num1=num)
                                       ^
                                   (       )
prog.c:12:12: note: use '==' to turn this assignment into an equality comparison
                                if(num1=num)
                                       ^
                                       ==
prog.c:33:2: error: expected '}'
}
 ^
prog.c:3:1: note: to match this '{'
{
^
1 warning and 3 errors generated.

Standard output is empty