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Relational Operators

This operator is also knows an not equal to operator. It compares between the values of its two operands by checking for their inequality. It returns a boolean value true when operands have unequal values otherwise it returns false.

A coding example with != operator

/* A coding example with != operator */


int main()
if('z' != 'a') 		/* comparing a character to another character */
printf("z is not equal to a \n");

if(100 != 100.001)	/* comparing an int with a double */
printf("100 is not equal to 100.001 \n");

if(99.9999 != 99.999)	/* comparing a double with a double */
printf("99.9999 is  not equal to 99.999 \n");

if(5.00 != 5.0)		/* comparing an int to double */
printf("5.00 is not equal to 5.0 \n");

if(11 !=10)
printf("11 is not equal to 10 \n");

if(98 != 'a')		/* comparing int to ASCII value of a character */
printf("98 is not equal to a");

return 0;

Output -

z is not equal to a
100 is not equal to 100.001
99.9999 is  not equal to 99.999
11 is equal to 10
98 is equal to a
Note : There should never be any space between ! and = of != operator, or a compile error is thrown.

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Logical Operators in C >

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