explain method of validation in c8e7
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C8/ex7.c
4
C8/ex7.c
@ -7,7 +7,7 @@ int main() {
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printf("Enter radius: ");
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rc = scanf("%f", &radius);
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// scanf returns number of scanned items
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// scanf returns number of scanned items. If input is invalid then 0 values will have been scanned.
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if (rc != 1) {
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printf("Please enter an positive real integer or decimal\n");
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return 1;
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@ -15,7 +15,7 @@ int main() {
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printf("Enter height: ");
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rc = scanf("%f", &height);
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// scanf returns number of scanned items
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// scanf returns number of scanned items. If input is invalid then 0 values will have been scanned.
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if (rc != 1) {
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printf("Please enter an positive real integer or decimal\n");
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return 1;
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