What are the uses of C language?

Answer 1

In computing, C is a general-purpose, cross-platform, block structured, procedural, imperative computer programming language originally developed in 1972 by Dennis Ritchie at the Bell Telephone Laboratories for use with the Unix operating system.[2] Although C was designed for implementing system software,[3] it is also widely used for developing application software. It is widely used on a great many different software platforms and computer architectures, and several popular compilers exist. C has greatly influenced many other popular programming languages, most notably C++, which originally began as an extension to C. Like most imperative languages in the ALGOL tradition, C has facilities for structured programming and allows lexical variable scope and recursion, while a static type system prevents many unintended operations. In C, all executable code is contained within functions. Function parameters are always passed by value. Pass-by-reference is achieved in C by explicitly passing pointer values. Heterogeneous aggregate data types (struct) allow related data elements to be combined and manipulated as a unit. C program source text is free-format, using the semicolon as a statement terminator (not a delimiter). C also exhibits the following more specific characteristics: * non-nestable function definitions, although variables may be hidden in nested blocks * partially weak typing; for instance, characters can be used as integers * low-level access to computer memory by converting machine addresses to typed pointers * function pointers allowing for a rudimentary form of closures and runtime polymorphism * array indexing as a secondary notion, defined in terms of pointer arithmetic * a preprocessor for macro definition, source code file inclusion, and conditional compilation * complex functionality such as I/O, string manipulation, and mathematical functions consistently delegated to library routines * a few dozen reserved keywords * syntax divergent from ALGOL, often following the lead of C's predecessor B, for example using ** { ... } rather than ALGOL's begin ... end ** the equal-sign for assignment (copying), much like Fortran ** two consecutive equal-signs to test for equality (compare to .EQ. in Fortran or the equal-sign in BASIC) ** && and in place of ALGOL's and and or, which *** are syntactically distinct from the bit-wise operators & and | (used by B for both meanings) *** never evaluate the right operand if the result can be determined from the left alone (short-circuit evaluation) ** a large number of compound operators, such as +=, ++, etc. * In early versions of C, only functions that returned a non-integer value needed to be declared if used before the function definition; a function used without any previous declaration was assumed to return an integer, if its value was used. For example: long int SomeFunction(); /* int OtherFunction(); */ /* int */ CallingFunction() { long int test1; register /* int */ test2; test1 = SomeFunction(); if (test1 > 0) test2 = 0; else test2 = OtherFunction(); return test2; }

In computing, C is a general-purpose, cross-platform, block structured, procedural, imperative computer programming language originally developed in 1972 by Dennis Ritchie at the Bell Telephone Laboratories for use with the Unix operating system.[2] Although C was designed for implementing system software,[3] it is also widely used for developing application software. It is widely used on a great many different software platforms and computer architectures, and several popular compilers exist. C has greatly influenced many other popular programming languages, most notably C++, which originally began as an extension to C. Like most imperative languages in the ALGOL tradition, C has facilities for structured programming and allows lexical variable scope and recursion, while a static type system prevents many unintended operations. In C, all executable code is contained within functions. Function parameters are always passed by value. Pass-by-reference is achieved in C by explicitly passing pointer values. Heterogeneous aggregate data types (struct) allow related data elements to be combined and manipulated as a unit. C program source text is free-format, using the semicolon as a statement terminator (not a delimiter). C also exhibits the following more specific characteristics: * non-nestable function definitions, although variables may be hidden in nested blocks * partially weak typing; for instance, characters can be used as integers * low-level access to computer memory by converting machine addresses to typed pointers * function pointers allowing for a rudimentary form of closures and runtime polymorphism * array indexing as a secondary notion, defined in terms of pointer arithmetic * a preprocessor for macro definition, source code file inclusion, and conditional compilation * complex functionality such as I/O, string manipulation, and mathematical functions consistently delegated to library routines * a few dozen reserved keywords * syntax divergent from ALGOL, often following the lead of C's predecessor B, for example using ** { ... } rather than ALGOL's begin ... end ** the equal-sign for assignment (copying), much like Fortran ** two consecutive equal-signs to test for equality (compare to .EQ. in Fortran or the equal-sign in BASIC) ** && and in place of ALGOL's and and or, which *** are syntactically distinct from the bit-wise operators & and | (used by B for both meanings) *** never evaluate the right operand if the result can be determined from the left alone (short-circuit evaluation) ** a large number of compound operators, such as +=, ++, etc. * In early versions of C, only functions that returned a non-integer value needed to be declared if used before the function definition; a function used without any previous declaration was assumed to return an integer, if its value was used. For example: long int SomeFunction(); /* int OtherFunction(); */ /* int */ CallingFunction() { long int test1; register /* int */ test2; test1 = SomeFunction(); if (test1 > 0) test2 = 0; else test2 = OtherFunction(); return test2; }

In computing, C is a general-purpose, cross-platform, block structured, procedural, imperative computer programming language originally developed in 1972 by Dennis Ritchie at the Bell Telephone Laboratories for use with the Unix operating system.[2] Although C was designed for implementing system software,[3] it is also widely used for developing application software. It is widely used on a great many different software platforms and computer architectures, and several popular compilers exist. C has greatly influenced many other popular programming languages, most notably C++, which originally began as an extension to C. Like most imperative languages in the ALGOL tradition, C has facilities for structured programming and allows lexical variable scope and recursion, while a static type system prevents many unintended operations. In C, all executable code is contained within functions. Function parameters are always passed by value. Pass-by-reference is achieved in C by explicitly passing pointer values. Heterogeneous aggregate data types (struct) allow related data elements to be combined and manipulated as a unit. C program source text is free-format, using the semicolon as a statement terminator (not a delimiter). C also exhibits the following more specific characteristics: * non-nestable function definitions, although variables may be hidden in nested blocks * partially weak typing; for instance, characters can be used as integers * low-level access to computer memory by converting machine addresses to typed pointers * function pointers allowing for a rudimentary form of closures and runtime polymorphism * array indexing as a secondary notion, defined in terms of pointer arithmetic * a preprocessor for macro definition, source code file inclusion, and conditional compilation * complex functionality such as I/O, string manipulation, and mathematical functions consistently delegated to library routines * a few dozen reserved keywords * syntax divergent from ALGOL, often following the lead of C's predecessor B, for example using ** { ... } rather than ALGOL's begin ... end ** the equal-sign for assignment (copying), much like Fortran ** two consecutive equal-signs to test for equality (compare to .EQ. in Fortran or the equal-sign in BASIC) ** && and in place of ALGOL's and and or, which *** are syntactically distinct from the bit-wise operators & and | (used by B for both meanings) *** never evaluate the right operand if the result can be determined from the left alone (short-circuit evaluation) ** a large number of compound operators, such as +=, ++, etc. * In early versions of C, only functions that returned a non-integer value needed to be declared if used before the function definition; a function used without any previous declaration was assumed to return an integer, if its value was used. For example: long int SomeFunction(); /* int OtherFunction(); */ /* int */ CallingFunction() { long int test1; register /* int */ test2; test1 = SomeFunction(); if (test1 > 0) test2 = 0; else test2 = OtherFunction(); return test2; }