Tutorial 8

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[Tutorial 7] 9.Calculate average marks of 4 subjects which, entered separately.

#include <stdio.h> int main() { float subject1, subject2, subject3, subject4, average;      /* Input marks of each subject from the user*/      printf( "Enter marks of subject 1: " );      scanf( "%f" , &subject1);      printf( "Enter marks of subject 2: " );      scanf( "%f" , &subject2);      printf( "Enter marks of subject 3: " );      scanf( "%f" , &subject3);      printf( "Enter marks of subject 4: " );      scanf( "%f" , &subject4); /* Calculate average marks*/      average = (subject1 + subject2 + subject3 + subject4) / 4; /* Display the average marks*/      printf( "The average marks of the four subjects is: %.2f\n" , average); return 0; }
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Compilation process in c

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   What is a compilation?        C is a programming language that converts source code into object code or machine code. The conversion process has four steps: Pre-processing, Compiling, Assembling, and Linking.      The preprocessor eliminates all the comments from the source code and carries out the preprocessor directives. For instance, it substitutes the directive <stdio.h> with the contents of the 'stdio.h' file.       The following are the phases through which our program passes before being transformed into an executable form:         Preprocessor         Compiler         Assembler         Linker Preprocessor A source code file is a text file that contains instructions written in the C programming language. The file name has a ".c" extension to indicate its format. Before compiling the source code, a preprocessor analyzes and modifies i...
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