cs:c_language:boolean_expressions
Return to Home page
If you found any error, or if you want to partecipate to the editing of this wiki, please contact: admin [at] skenz.it
You can reuse, distribute or modify the content of this page, but you must cite in any document (or webpage) this url: https://www.skenz.it/cs/c_language/boolean_expressions
Boolean Expressions
Concepts:
Boolean expressions (and if
statement)
Text:
Some examples regarding boolean expressions, in conjunction with the if
statement.
Examples have been explained with comments in the code.
Solution:
- boolean_expressions.c
/* Examples regarding boolean expressions */ #include <stdio.h> int main() { int res; int x = 2, y = 3; /* In C, a number different than 0 is a TRUE value */ if (-10) { printf("A: True\n"); /* Executed code */ } /* A false condition in C is the number 0 */ if (0) { printf("B: True\n"); }else{ printf("B: False\n"); /* Executed code */ } res = 3+2*5; /* res=13 */ if (res) { /* 13 is a True value */ printf("C: True\n"); /* Executed code */ } /* res that is equal to 13 is greater than the 7. The comparison is therefore a TRUE value, but NOT TRUE = FALSE */ if ( !(res>5+2) ) { printf("D: True\n"); }else{ printf("D: False\n"); /* Executed code */ } /* 2 > 5 is FALSE and 3 < 4 is TRUE, i.e, FALSE OR TRUE = TRUE, therefore the variable res contain a value different than 0, in this case it contains the value 1 */ res = 2 > 5 || 3 < 4; /* 0 OR 1 */ printf("E: %d\n", res); /* Print "E: 1" */ /* x=2; y=3; 2 >= 3 is FLASE, 3==3 is TRUE, 2!=3 is FALSE Analizing the boolean expression: (FALSE AND TRUE) OR NOT TRUE = FALSE OR FALSE = FALSE, therefore the variable res contains a 0 */ res = (x >= y && x+1==y) || !(x!=y); printf("F: %d\n", res); return 0; }
Output:
The output of this program is:
A: True B: False C: True D: False E: 1 F: 0
If you found any error, or if you want to partecipate to the editing of this wiki, please contact: admin [at] skenz.it
You can reuse, distribute or modify the content of this page, but you must cite in any document (or webpage) this url: https://www.skenz.it/cs/c_language/boolean_expressions
/web/htdocs/www.skenz.it/home/data/pages/cs/c_language/boolean_expressions.txt · Last modified: 2024/04/08 22:35 by 127.0.0.1