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author | Tobias Klauser <tklauser@distanz.ch> | 2008-01-27 11:37:44 +0100 |
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committer | Tobias Klauser <tklauser@xenon.tklauser.home> | 2008-01-27 11:37:44 +0100 |
commit | 7e0f021a9aec35fd8e6725e87e3313b101d26f5e (patch) | |
tree | b1cacc4b24393f517aeb4610e9e1021f954307a8 /reference/C/CONTRIB/OR_PRACTICAL_C/06_2.c |
Initial import (2.0.2-6)2.0.2-6
Diffstat (limited to 'reference/C/CONTRIB/OR_PRACTICAL_C/06_2.c')
-rw-r--r-- | reference/C/CONTRIB/OR_PRACTICAL_C/06_2.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/OR_PRACTICAL_C/06_2.c b/reference/C/CONTRIB/OR_PRACTICAL_C/06_2.c new file mode 100644 index 0000000..1bdfb0f --- /dev/null +++ b/reference/C/CONTRIB/OR_PRACTICAL_C/06_2.c @@ -0,0 +1,39 @@ +#include <stdio.h> +char line[100];/* line of text from input */ + +int result; /* the result of the calculations */ +char operator; /* operator the user specified */ +int value; /* value specified after the operator */ +main() +{ + result = 0; /* initialize the result */ + + /* loop forever (or until break reached) */ + while (1) { + (void) printf("Result: %d\n", result); + (void) printf("Enter operator and number: "); + + (void) fgets(line, sizeof(line), stdin); + (void) sscanf(line, "%c %d", &operator, &value); + + if ((operator == 'q') || (operator == 'Q')) + break; + + if (operator == '+') { + result += value; + } else if (operator == '-') { + result -= value; + } else if (operator == '*') { + result *= value; + } else if (operator == '/') { + if (value == 0) { + (void)printf("Error:Divide by zero\n"); + (void)printf(" operation ignored\n"); + } else + result /= value; + } else { + (void) printf("Unknown operator %c\n", operator); + } + } + return (0); +} |