| An expression is a combination of variables, constants and operators arranged according to the syntax of the language. |
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| C can handle any complex expression with ease. |
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| It is little bit different from algebraic expression. |
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| Algebraic Expressions |
C Expressions |
| axb-cxd |
a*b-c*d |
| (m+n)(a+b) |
(m+n)*(a+b) |
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| Evaluation of expression: |
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| We can evaluate an expression by using assignment statement. As |
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| Variable = Expression. |
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| e.g. : |
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| Temp = ((f * cos(x)/sin (y))+(g * sin(x)/cos(y))) |
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| All relevant variables must be assigned values before the evaluation of the expression. |
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| Type conversion in expression: |
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| To effectively develop C programs, it would be necessary for you to understand the rules that are used for the implicit conversion of operands. |
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| If an expression contains an operation between an int and a float, the int would be automatically promoted to a float before carrying out of operation. |