When you compile this program, the compiler displays a message similar to the following:
cprog.c(8) : Error: `;' expected
let us break this error message in parts. cprog.c is the name of the file where the error was found. (8) is line number where the error was found. Error: `;' expected is A description of the error.
This message is quite informative, and tells you that in line 8 of CPROG.C the compiler expected to find a semicolon but didn't. However, you know that the semicolon was actually omitted from line 7, so there is a discrepancy.
Why the compiler reports an error in line 8 when, in fact, a semicolon was omitted from line 7. The answer lies in the fact that C doesn't care about things like breaks between lines. The semicolon that belongs after the printf() statement could have been placed on the next line though doing so would be bad programming in practice.
Only after encountering the next command (return) in line 8 is the compiler sure that the semicolon is missing. Therefore, the compiler reports that the error is in line 8.
There may be a number of possibilities of different type of errors. Let us discuss linking error Messages. Linker errors are relatively rare and usually result from misspelling the name of a C library function. In this case, you get an Error: undefined symbols: error message, followed by the misspelled name. Once you correct the spelling, the problem should go away.
Printing Numbers
Let us see the following example:
// How To print the numbers //
#include<stdio.h>
void main()
{
int num = 10;
printf(“ The Number Is %d”, num);
}
The output of the program will be displayed on the screen as follows:
The Number Is 10
The % sign is used to signal the output of many different types of variables. The character following the % sign is a d, which signals the output routine to get a decimal value and output it.
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